THE ANDEAN SPECIES OF PILEA 
By Ellsworth P. Killip 
INTRODUCTION 
Pilea is by far the largest genus of Urticaceae. Weddell in his final 
monograph 1 of the family recognized 159 species as valid, about 50 
of which were said to occur in the Andes of South America. That 
these species had a very limited range of distribution was indicated 
by the fact that more than 30 were known from only a single collection 
and that only 9 of the others were in any sense widely distributed in 
the Andean countries. Two, P. microphyUa and P. pubescens, 
occurred throughout the American Tropics, and P. kyalina and 
P. dendrophUa extended eastward in South America. In the 50 years 
following the publication of this monograph only 10 species were 
described from the Andean region. 
Because of the large number of specimens of Pilea collected by 
expeditions to the Andes sponsored by the Smithsonian Institution, 
the New York Botanical Garden, the Gray Herbarium and the 
Arnold Arboretum of Harvard University, the Field Museum of 
Natural History, and the Academy of Natural Sciences, Philadelphia, 
which were submitted to me for identification but which could not 
be assigned to any known species, I began the preparation of a mono- 
graph of all the Andean species. This was completed in 1935 but 
unfortunately could not be printed in its entirety at that time. 
Instead, a greatly abridged paper was published,2 which contained a 
key to all the Andean species, descriptions of 30 new ones, and a 
few changes of name and of rank. In this there was no opportunity 
to present descriptions of the earlier species or to discuss their 
synonymy. It therefore seems highly desirable that the preliminary 
survey be followed as soon as possible by this more extensive one. 
As the present paper appears in the same volume of the Contribu- 
tions from the United States National Herbarium as the first, there 
is little need to reproduce the key or to give diagnoses of the species 
which were there described as new. A slight alteration to the key 
is suggested in the discussion of P. poeppigiana; for two names in 
the key, P. leptophylla (species no. 55) and P. macrophyUa (species 
no. 89), P. fendleri and P. picta should be substituted, respectively. 
In order to retain the numbering of the species used in the key I 
: DC. Prodr. 16»: 32-235. I860. 
• Contr. U. S. Nat. Herb. 26 *: 367-394. 1936. 
475 
476 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
have given "a" numbers to the single species, P. cushiensis, described 
in the interim, and to the three species now newly proposed. 
Numerous transfers of specific names to Adicea by Kuntze are omitted 
from the synonymy. 
In the preparation of this revision I have had the opportunity of 
examining nearly all the type specimens of the Andean species, photo- 
graphs of which are deposited in the National Herbarium. I wish 
again to express my appreciation to those in charge of the herbaria 
I have consulted for the many courtesies extended. These herbaria 
are indicated thus in the citation of specimens: 
A, Arnold Arboretum of Harvard University. 
B, Botanisches Musem, Berlin-Dahlem, 
Baa, H. W. Baseler Herbarium, consulted at Iquitos, Peru; now on deposit 
at the New York Botanical Garden. 
BM, British Museum (Natural History). 
Bo, Boissier Herbarium, Geneva. 
Bog, Instituto de la Salle, Bogota. 
Brux, Jardin de l'Et&t, Brussels. 
BW, Willdenow Herbarium, Berlin-Dahlem. 
F, Field Museum of Natural History, Chicago. 
G, Gray Herbarium of Harvard University. 
Gen, Conservatoire et Jardin Botaniques, Geneva. 
Go, Goeldi Museum, ParfL 
HNC, Herbario Nacional de Colombia, Bogotd. 
K, Royal Botanic Gardens, Kew. 
Ma, Jardfn Bot&nico, Madrid. 
Mo, Missouri Botanical Garden, St. Louis. 
P, Museum d'Histoire Naturelle, Paris. 
Ph, Academy of Natural Sciences, Philadelphia. 
Pr, N&rodnf Museum, Prague. 
S, Riksmuseet, Stockholm. 
US, United States National Museum. 
Ut, Rijks Universiteit, Utrecht. 
V, Naturhistorisches Museum, Vienna. 
Y, New York Botanical Garden. 
SYSTEMATIC TREATMENT 
PELEA Lindl. 
Pile a Lindl. Coll. Bot. pi. 4' 1821. 
Adicea Raf. Anal. Nat, 179. 1815, hyponym. 
Plants annual or perennial, herbaceous, sometimes suffrutescent, often succu- 
lent, repent, decumbent, or erect, monoecious or dioecious; stipules intra-axillary, 
connate, deciduous or persistent; leaves opposite (those of a pair equal or 
markedly unequal, similar or very dissimilar), usually petiolate, toothed or entire, 
trinerved, triplinerved, or rarely penninerved, usually bearing numerous fusiform, 
linear, punctiform, or rarely stellate cystoliths; flowers unisexual, in unisexual or 
androgynous clusters, these solitary or forming cymes or panicles; bracts small and 
deciduous, rarely large and subpersistent; staminate perianth 4-parted (rarely 2- 
or 3-parted), the stamens as many as the segments; pistillate perianth 3-parted, 
the middle segment usually much larger than the lateral segments; stigma sessile, 
penicillate; achene compressed. 
KILLIP—ANDEAN SPECIES OF PILEA 
477 
I. Microphyllab 
1. Pilea microphylla (L.) Liebm. Dansk. Vid. Selsk. Skrivt. V. 3:296. 1851. 
Parietaria microphylla L. Syst. Nat. ed. 10, 1308. 1759. 
Urtica caUitrichoides H. B. K. Nov. Gen. & Sp. 2: 40. 1817. 
Pilea muicosa Lindt, Coll. Bot. pi. 4. 1821. 
Pilea caUitrichoides Kunth, Ind. Sem. Hort. Berol. 12. 1846. 
Succulent herb, 4 to 30 cm high, glabrous throughout, variable in size and habit; 
leaves usually crowded, short-petioled, obtuse or subacute at apex, entire, those 
of a pair unequal, the larger prevailingly obovate, up to 10 mm long, the Bmaller 
orbicular or obovate-orbicular, up to 3 mm long, the upper surface transversely 
striate with linear cyetolithe; plants monoecious, rarely dioecious, the flower 
clusters androgynous or unisexual, sessile or subsessile; achenes ovate, about 0.3 
mm long. 
Distribution: Throughout the American Tropics from Mexico and southern 
Florida to Peru and northern Brazil, up to 2,000 meters altitude; often cultivated. 
Curasao: Boldingh 5648 (P). 
Venezuela. 
Sucre: Cristobal Col<5n, Broadway 9 (G, US, Y). Caripe, Hvmboldt St Bon~ 
pland (type of Urtica caUitrichoides, B, P). 
Monagas: Cerro de Turumiquire, Tate 351 (US). 
Miranda: Las Motasas, AUart 185 (US). 
Federal Dibtrict: La Guayra, Kuntze 1328 (Y); Gollmer in 1853 (B). 
Caracas, Piitier 9551 (G, Gen, US, Y); Bailey & Bailey 313 (US); Ernst 
in 1878 (V). El Valle, PitHer 11972 (Gen, US, Y). 
Aragua: Colonia Tovar, Fendler 1240 (G, Gen, K, Ph). Maracay, Cornelia 
132 (US). 
MJSrida: M^rida, Reed 185 (US). 
Colombia. 
Magdalena: Santa Marta, H. H. Smith 1460 (K, US, Y). Pueblo Viejo, 
Seifriz 317 (US). San Miguel, Seifriz 541a (Ph). 
AtlXntico: Barranquilla, Elias 564 (US). 
Bol(var: Cartagena, Heriberto 342 (US). Turbaco, KUlip & Smith 14353 
(G, US, Y), 14470 (G, US, Y). 
Huila: Neiva, Rusby & Pennell 458 (G, US, Y). 
Santander: Bucaramanga, KUlip & Smith 16200 (G, US, Y), 16258 (G, 
US, Y). 
Cundinauarca: Narifio, Pirez 351 (US). 
Antioquia: Medellfn, Archer 1 (US), 2 (US), 690 (US), 770 (US); Charetier 
65 (US). 
El Choc<S: Quibd<5, Archer 1793 (US). 
El Valle: Dagua, KUlip 5439 (G, US, Y). Rfo Dagua, Andri 2517 (K). 
Cali, Andri 442 (K). Cascajal, Andri 3692 (F, G, K). Buga, Dryander 
94 (B). 
El Cauca: Olaya, Andri 2890 (F, G, K, Y). Rio Quilcac6, Andri 2823 (K). 
Ecuador: Andri K722 (K). 
Guayas: Guayaquil, Mille 20 (US), 93 (US). 
Cbimborazo: Andri K723 (K). Pallatanga, Sodiro 153/17 (B). 
Los Rfos: Guaduas, Remy in 1856 (P). 
11515&—3D 2 
478 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Peru: Ruiz & Pavdn (B, Ma); Poeppig (B). 
Amazon as: Chachapoyas, Matkews 3101 (G, Gen, K). 
San MartIn: Tarapoto, Spruce 4028 (B, BM, Brux, G, K); Ule 6657 
(B, Gen, Go, K) j L. Williams 6071 (US). San Roque, L. Williams 7233 
(US). Rio Huallaga, L. Williams 4082 (US), 6662 (US). Zepelacio, 
Klug 3719 (US). 
Lobeto: Iquitos, Killip A Smith 27500 (US, Y). Puerto Melendez, Test' 
mann 4742 (B). 
HuInuco: Piedra Grande, Macbride 3690 (F, Gen, US). Cochero, Poeppig 
in 1830 (V). 
JuNfN: La Merced, Killip Smith 24073 (Pt US, Y). Paucartambo 
Valley, KiUip <£ Smith 25329 (F, US, Y). 
Numerous segregates of P. microphylla have been proposed, but nearly all of 
them appear to represent forms which the species assumes under different en- 
vironmental conditions. These variations are chiefly in the height of the plant, 
in its habit, whether it is prostrate or ascending, and in the size of the leaves. 
Within the Andean countries only three other species of the P. microphylla 
relationship occur: P. foliosa, which in reality is more closely allied to P. diver vi- 
folia, P. herniarioides, a creeping plant with filiform stems and different cystolithic 
marking, and P. serpyllacea, distinguished by elongate peduncles and rounder, 
often crenulate leaves. Pilea microphylla is a native of warm, tropical regions, 
although it has been introduced as a border plant and is grown in pots at high 
altitudes; P. serpyllacea grows only in the high mountains. 
2. Pilea folio aa Killip, Contr. U. 8. Nat. Herb. 26: 377. 1936. Plate 30. 
Distribution: Central Peru, at 1,200 to 3,000 meters altitude, 
Peru. 
Carpapata, 3,000 meters, Killip A Smith 24400 (F, US, type, Y). 
H uacapistana, Killip & Smith 24281 (F, US, Y). Chanchamayo 
Valley, Schunke 498 (F, US), 678 (F), 992 (F, US). 
Explanation o» Plate 30.—Pfiea foliota, the type specimen. One-half natural site. 
S. Pilea serpyllacea (H. B. K.) Liebm. Vid. Selsk. Skrivt. V. 2: 296. 1851. 
Uriica. serpyllacea H. B. K. Nov. Gen. & Sp. 2: 37. 1817. 
Urtica thymifolia H. B. K. Nov. Gen. & Sp. 2: 37. 1817. 
Pilea globosa Wedd. Ann. Sci. Nat. III. Bot. 18: 208. 1852. 
Pilea thymifolia Blume, Mus. Bot. Lugd. Bat. 2: 44. 1855. 
Pilea subcrenata Wedd. in DC. Prodr. 101: 148. 1869. Not P. subcrenata 
Blume, 1855. 
Plant very succulent, glabrous, reddish-tinged throughout; leaves subglobose, 
1 to 5 mm in diameter, entire or shallowly crenulate, transversely striate with 
fusiform cystoliths; plants monoecious, or staminate flowers sometimes wholly 
wanting, the pistillate flowers in long- (5 to 10 mm) peduncled cymes 1.5 to 2 mm 
wide, the staminate flowers very few to a plant, sessile or subsessile and solitary 
at the base of the peduncles of the pistillate cymes, the perianth subglobose, 
about 1 mm in diameter; achenes 0.4 to 0.5 mm long. 
Distribution: Western Venezuela to Peru and Bolivia, at 2,000 to 3,500 
meters altitude. 
Venezuela. 
M£kida: Mucurubd, Gehriger 258 (US). 
COLOMBIA. 
Cttndinamarca: Bogota, Guevara 218 (US). 
Antioquia: Medellfn, Triana 898 (B, K, P, Y), 
El Catjca: Between Coconuco and Popay&n, Killip 6888 (B, G, K, Ph, US, Y). 
Portachuela, AndrS 2453 (K). Popayin, Garcia 4652 (US). 
KILLIP—ANDEAN SPECIES OF PILEA 
479 
NariRo: Between Almaguer and Pasto, Humboldt & Bonpland (B, Herb. 
Willd. 17422, P, type). Between Pasto and Teindala, Humboldt & 
Bonpland (type of Urtica thymifolia, B, BW, P) ■ Rfo Eamita, Lehmann 
5411 (B, K). Guaitara Valley, Sliibel 432 (B). Pasto, Triana 899 
(HNC, K, P). 
Ecuador: Sodiro 153/18 (B), 153/19 (B). "Andes," Jameson 481 (B, BM, P, 
type of P. subcrenata Wedd., V). Lubco, Hall 28 (B). Chuquiribamba, 
Andri 4440 (K, Y). 
Imbabura: Pinllar, Firmin 369 (US). Ibarra, Benoist 3583 (P). 
Pichincha: Gu&pulo, Firmin 271 (US); Benoist 2292 (P). Antisanilla, 
Anthony <fc Tate 338 (US). Antisana, Sodiro 153/20 (B). 
Tungurahua: Tungurahua, Tale 643 (US). Ambato, Pearce (K); Pachano 
3 (US, Y); Heinrichs 32 (Gen). 
Chiuborazo: Punfn, Anthony <fc Tate 425 (US). Chimborazo, Couthouy 
(G). Riobamba, Rimbach 136 (US). 
Loja: Between Loja and San Lucas, Hitchcock 21445 (US). 
Peru: Ruiz <fc Pav6n (B, BM, type of P. globosa, Bo, Ma); Jussieu (P). 
Cajamarca: Hualgayoc, Weberbauer 4054 (B); Raimondi 2209 (B). Calla- 
cate, Raimondi 5639 (B). 
HujInttco: Huacachi, Macbride 3868 (F, US), 4087 (F, Gen, US). Hudnuco, 
Macbride 3512 (F, US); Pearce 118 (BM, K). Casapf, Poeppig 1381 (V). 
Lima: Rfo Blanco, Killip & Smith 21601 (US, Y). Matucana, Macbride <k 
Feather&tone 447 (F, US). 
JunIn: Carpapata, Killip & Smith 24334 (F, US, Y). Between Tambo de 
Yiso and Chaupichaca, Weberbauer 158 (B). 
Cuzco: Herrera 51 (B); Weberbauer 4892 (B). Urubamba Valley, Cook & 
Gilbert 262 (US), 1035 (US); Herrera 2288 (B). Apurimac Valley, 
Herrera 3065 (US). Ollantaitambo, Pennell 13657 (Ph). 
Bolivia. 
La Paz: Sorata, Mandon 1005 (BM, G, Gen, K, Y). 
In proposing Urtica thymifolia H« B. K. the authors stated that it was very close 
to XJ, serpyUacea, differing in being smaller in every way and in having suborbicular 
leaves and a monoecious inflorescence. I have made direct comparison of the 
types of both of these in the Humboldt Herbarium at Paris and am confident that 
only a single species is represented. Weddell adopted the specific name globosa, 
taken from a Ruiz and Pavdn specimen, for P, thymifolia, observing that the latter 
name was inappropriate. The Peruvian plant may not be nonspecific with the 
one from farther northward. When fresh, it has a reddish hue and the leaves are 
like little globules, without a vestige of cremation. When dried, this plant falls to 
pieces, whereas typical P. serpyUacea remains fairly intact. 
PUea serpyUacea closely resembles P. microphyUa, the most satisfactory differ- 
entiating character being the well-developed peduncles of P. serpyUacea. In 
herbaria the leaves are nearly orbicular, whereas in P. microphyUa they are 
obovate. PUea serpyUacea is a plant of the higher mountains, P. microphyUa of 
low elevations though sometimes cultivated at higher altitudes. 
The material here cited shows gradations between forms with definitely crenu- 
late leaves, as in the type of P. subcrenata Wedd., and those with entire leaves. 
PUea serpyllifolia (Poir.) Wedd. (Parietaria serpyUifolia Poir.1) was considered 
by Weddell as synonymous with P. serpyUacea. I have seen two specimens of 
this, the type in the Lamarck Herbarium, from Martinique, and a specimen, also 
at Paris, bearing the data "Nov. Granata? ex herb. Bonpland." PUea serpyUi- 
folia is distinguished from P. serpyUacea and P, microphyUa by having ciliate leaves 
* Lam. Encycl. 5: 16. 1804. 
480 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
with conspicuous cystoliths on their upper surface. In view of the uncertainty 
in the locality data the species is not included in the present synopsis. 
Local names: "Accoicarpa," "quisa," "kkuru-quisa" (Peru). 
4. Pilea herniarioides (Swartz) Lindl. Coll. Got. under pi. 4- 1821. 
Urtica herniarioides Swartz, Svensk. Vet. Akad. Handl. 8: 64. pi. i?,/. 1. 1787. 
Pilea musco&a var. herniarioides Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 174. 
1856-57, 
Pilea microphylla var. herniarioides Wedd. in DC. Prodr. 1Q1: 106. 1869. 
Slender, prostrate or creeping, glabrous herb with a filiform stem; leaves of a 
pair subequal, rhombic-orbicular, 1.5 to 5 mm long and wide, obtuse at apex, 
abruptly tapering to a filiform petiole subequal to or longer than the blade, entire; 
plants usually monoecious, the clusters androgynous or unisexual, sessile in the 
axils of the upper leaves; achenes ovate-elliptic, 0.4 to 0.5 mm long. 
Distribution: Mexico and southern Florida to Colombia and British Guiana, 
at low elevations, the type from Hispaniola (BW, type collection!). 
Curasao: Curran & Hainan 3 (G, US, P). 
Colombia. 
Maqdalena: Santa Marta, H. H. Smith 1222 (B, F, Mo, US, Y). 
BoLfvAR: Turbaco, Killip <fc Smith 14690 (G, US, Y), 
Ctjndinamarca: Quetamg, PenneU 1738 (Y). 
The Curasao plant and Killip & Smith 14690 are perhaps better referred to 
P. microphylla. The exact limits of P. herniarioides are not well established. As 
it is primarily West Indian, barely entering our limits, I am not attempting to 
present final conclusions. 
II. Parietariae 
5. Pilea nerteroides Killip, Contr. U. S. Nat. Herb. 26: 377. 1936. 
Pilea eordifolia Killip, Journ. Washington Acad. Sci, 15: 50. 1925. Not P. 
cordifolia Benth. 1888. 
Slender repent herb, leafy throughout; stem villosulous; stipules ovate, about 
1 mm long, persistent; leaves cordate, up to 4 mm long and 5 mm wide, entire, 
inconspicuously 3-nerved, villosulous, covered with punctiform cystoliths; plants 
monoecious; staminate flowers borne singly or in pairs, the peduncles 3 to 6 mm 
long, the segments narrowly ovate; pistillate flowers in 4 to 6-flowered, pedunculate 
umbels; achenes ovoid, about 0.7 mm long. 
Distribution: Known only from the type locality. 
Peru. 
HuAnuco: Tambo de Vaca, alt, 4,200 meters, Macbride 4395 (B, F, type, 
Gen, K, US). 
6. Pilea nitida Wedd. Ann. Sci. Nat. III. Bot. 18: 211. 1852. 
Plant very slender, up to 10 cm high, glabrous; leaves elliptic-ovate, obtuse at 
apex and base, 4 to 15 mm long, 2.5 to 8 mm wide, entire or rarely subcrenulate, 
obscurely 3-nerved, lustrous, bearing linear cystoliths on upper surface; plants 
monoecious, the flowers in sessile compact androgynous heads barely half as 
long as the petioles. 
Distribution: Probably confined to the lower mountain slopes of western 
Peru. 
Peru: Dombey [or Ruiz <fc Pavtin?] (Gen, Ma, P, type). 
Cajamarca: San Pablo, alt. 2,300 meters, Weberbauer 3872 (B), 
Lima: San Augustfn, alt. 400 meters, Weberbauer 5244 (B). 
KILLIP—ANDEAN SPECIES OF PILEA 481 
7. Pile a lindeniana Wedd. Ann. Sci. Nat. III. Bot. 18: 210. 1852. 
Pilea lindenii Blume, Mus. Bot. Lugd. Bat. 0: 49. 1855. 
Stem subligneous, repent, with numerous suberect, glabrous branches up to 50 
cm long; stipules ovate-oblong, 2.5 to 3.5 mm long, subpersistent; leaves ovate- 
lanceolate, 2.5 to 5 cm. long, 2 to 3 cm wide, acuminate at apex, rounded or 
cordulate at base, entire, hirsute on both surfaces, the cystoliths inconspicuous, 
linear and punctiform and very minute above, linear beneath; plants usually 
monoecious, the inflorescences unisexual; staminate inflorescence paniculiform, 
borne in the upper axils, the flowers in glomerules and subtended by persistent 
suborbicular bracts; pistillate inflorescence borne in lower axils, longer than the 
adjacent petioles. 
Distribution: Western Venezuela and Eastern Cordillera of Colombia, at 
1,500 to 3,000 meters altitude. 
Venezuela. M£rida: PAramo de Mucuty, Moritz 1293 (B, BM). La Asulita^ 
Reed 780 (US), 792 (US), 796 (US). 
Colombia: Mutis 1900 (Ma). 
Cundinauarca: Rodriguez 36 (US). Falls of Tequendama, Linden 79S) 
(BM, Bo, Brux, Gen, P, type, V); Cuatrecasas 3087 (US); Troll 3737 
(B). Bogota, Pennell 2278 (US, Y); Arisie Joseph A322 (BM, Bog, 
US), A888 (US), B80 (US); Goudot (P); Triana 236 (HNC, K, P), 877 
(B, BM, HNC, P); Goudot (K, P); Cuatrecasas 2586 (US), 3093 (Ma). 
Quetamg, Pennell 1863 (US, Y), Rfo Arzobispo, Holton in 1852 (Y). 
Meta: Villavicencio, Da we 265 (K, US). 
This is distinguished from near relatives by the dense indument, by the larger, 
persistent stipules, and by the conspicuous bracts. 
8. Pilea rhombea (L. f,) Ldebm. Dansk. Vid. Selsk. Skrivt. V. 2: 305. 1851. 
Urtica rhombea L. f. Suppl. PI. 417. 1781. 
Plant herbaceous; stem and branches slender, glabrous, bearing a few or no 
cystoliths; stipules up to 1 mm long, soon deciduous; leaves rhombic or ovate, 1 
to 3.5 cm long, 1 to 2 cm wide, narrowed to an acute or subobtuse apex, entire, 
membranous, glabrous or sparingly pubescent with hyaline hairs, sometimes 
ciliate, the cystoliths linear, obscure, scant on lower surface; plants monoecious, 
the cymes shorter than the adjacent petioles, androgynous, the staminate flowers 
few, ebracteate; achenes about 0.7 mm long. 
Distribution: Venezuela and Colombia, at 1,000 to 2,800 meters altitude. 
Venezuela: Lansberg (B); Ernst 458 (BM), 1164 (BM), 
Federal District: Sanchorquiz, Eggers 13445 (US). Galip&n, Ptttier 10448 
(Gen, US, Y). Caracas, GoUmer in 1852 (B); PUtier 11127 (Gen, US). 
MdniDA: Chama, Moritz 1294 (B, BM, K). P&ramo de la Sal, Jakn 595 
(US). Mucurubi, Gehriger 203 (Gen, US), 248 (Gen, US). 
Colombia. 
Santander: Las Vegas, Killip & Smith 15541 (G, US, Y), Suratd Killip & 
Smith 16421 (G, US). 16584 (G, US, Y), California, Killip & Smith 
16989 (G, US), 17025 (G, US, Y), 17090 (G, US, Y). La Baja, KiUip 
<fc Smith 18023 (G, US, Y). Charta, KiUip & Smith 18849 (G, US, Y). 
Norte DE Santander: Tapati, Killip & Smith 20202 (US). Loso, KiUip A 
Smith 20403 (G, US, Y). 
Cundinamarca: Mutis (type, Linnaean Herbarium); Andri 1302 (F, K, 
Y). Quebrada de la Vieja, Cuatrecasas 3092 (US). 
Usaqudn, Ariste Joseph A329 (Bog, US). Monserrate, Guevara 252 {US). 
Huila: Neiva, Rusby & Pennell 553 (Mo, US, Y). 
El Cauca: El Tambo, Sneidern 968 (S). 
This and the following species have been confused with the West Indian P. 
parietaria (L.) Blume. In typical Jamaican material of that species the leaves 
482 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
bear numerous elongate conspicuous cystoliths on the lower surface and are pre- 
vailingly much larger than in the South American specimens here referred to 
P. rhombea and P. alsinifolia. The individual staminate flowers of P. parietaria 
are only about half as large as those of the two South American relatives. Final 
disposition of this complex group of species must await a more detailed study of 
West Indian, Mexican, and Central American material. 
0. Piles alsinifolia Wedd. Ann. Sci. Nat. III. Bot. 18: 211. 1852. 
Plant up to 1.5 meters high, with thick succulent glabrous branches, bearing 
very numerous cystoliths, these usually imparting a whitish or yellowish coloring; 
stipules up to 1 mm long, soon deciduous; leaves orbicular-ovate or rhombic, 1 to 
2.5 cm long, 1 to 1.5 cm wide, obtuse or subacute at apex, entire, glabrous or 
sparingly hirsute, thick, pale beneath, densely covered with short-linear and 
punctiform cystoliths above, nearly destitute of cystoliths beneath, sparingly to 
densely lepidote beneath; plants dioecious, rarely monoecious; staminate inflores- 
cence paniculiform, longer than the leaves, the flowers ebracteate, in dense glom- 
erules; pistillate inflorescence similar, shorter than the leaves. 
Distribution: Eastern Cordillera of Colombia, at 1,500 to 3,000 meters, and 
Western Cordillera. 
Colombia. 
Santander: California, Killip & Smith 17014 (G, US, Y). Charts, Killip <fe 
Smith 19097 (G, US, Y), 19119 (G, US, Y). Tona, Killip & Smith 
19405 (G, US, Y), 19457 (G, US, Y), 19464 (G, US, Y). 
Norte de Santander: Tapatd, Killip <fe Smith 20188 (G, US, Y). Ocafia, 
Kalbreyer 1023 (B, K). 
Cundinamarca: Bogota, Goudol (P, type). 
El Vallk: Rio Dagua, Andri K1673 (F, K, Y). 
Goudot's type, which has ciliate leaves sparingly pilose on both surfaces, is 
exactly matched only by Killip & Smith, 20188, the rest of the material here cited 
being glabrous throughout. However, I can not believe that more than a single 
species is represented by these specimens. The plant has a wholly different aspect 
from P. rhombea, having much stouter, pale stems, thicker leaves, and a more 
diffuse inflorescence. 
10. Filea argentea Killip, Journ. Washington Acad. Sci. 15 : 290. 1925. 
Plant erect, glabrous; stipules soon deciduous; leaves of a node equal, oblong, 
up to 8 cm long, 3 cm wide, obtusely acuminate at apex, subauricular at base, 
sessile or nearly so, entire, dark green and bearing linear and punctiform cystoliths 
above, silvery-lustrous beneath, bearing numerous linear cystoliths; plants dioe- 
cious, the inflorescence of staminate plants confined to upper axils, that of 
pistillate plants at most axils, the flowers in dense glomerules forming panicles 
3 to 4 cm long; achenes suborbicular, about 0.5 mm long. 
Distribution: Eastern Cordillera of Colombia, between 1,500 and 2,000 meters 
altitude. 
Colombia. 
Huila: Neiva, alt. 1,500 to 2,000 meters, Rusby & Pennell 654 (Y, type), 
938 (US). 
Cundinamarca : Fusagasugd, Andri 1895 (K). 
11. Pilea tatei Killip, Contr. U. S. Nat. Herb. 26: 377. 1936. 
Distribution: Mountains of northeastern Venezuela. 
Venezuela. 
Monaoas: Cerro de Turumiquire, alt. 2,200 meters, Tate 187 (US), 188 
(US), 190 (US, type). 
KILLIP—ANDEAN SPECIES OF PILEA 483 
12. Pilea aenea Killip, Contr. U. S. Nat. Herb. 26: 378. 1936. 
DISTRIBUTION: Known only from the type specimen, from Colombia. 
Colombia: Mutia 1908 (Ma, type). 
13. Pilea anguatata Killip, Contr. U. S. Nat. Herb. 26: 378. 1936. 
Distribution : Peru or, more probably in view of other Grisar collections, 
Ecuador. 
Ecuador or Peru: Griaar (P, type). 
III. Fallaces 
14. Pilea lippioidea Killip, Journ. Washington Acad. Sci. 15: 296. 1925. 
Plant up to 60 cm high, glabrous, the stem repent and suffruteseent below; 
petioles of a pair unequal, the longer 1.5 to 4 cm long, the shorter usually less than 
half as long; leaves of a pair similar but unequal (smaller leaf one-third to two- 
thirds as long as the longer), ovate-elliptic, 2 to 10cm long, 1.5 to 6 cm wide, acute 
at apex, rounded or acute at base, coarsely crenate-serrate, penninerved; plants 
monoecious or dioecious; staminate flowers in slender-peduncled globose heads 
borne singly in the upper axils, subtended by an involucre of 8 persistent or 
deciduous, white, pink-striped bracts, the outer 4 orbicular, the inner 4 oblong, 
the perianth lobes 3, with long slender tips; pistillate flowers in short-peduncled 
cymes in the axils of the lower leaves; achenes 1.5 mm long. 
Distribution: Eastern and Central Cordilleras of Colombia, at 2,400 to 3,000 
meters altitude. 
Colombia. 
Santander: Las Vegas, Killip dk Smith 16054 (G, Gen, US, Y). Between 
Piedecuesta and Las Vegas, Killip A Smith 15559 (G, US, Y). 
Norte de Santander: Ocafia, Kalbrtyer 531 (K). 
Huila: Rio Paez Valley, PiUier 1216 (US, type). 
The conspicuous involucrate bracts subtending the staminate flower clusters 
and a 3-lobed, rather than the normal 4-lobed perianth of the staminate flowers, 
isolate this species from other South American representatives of Pilea of which 
the staminate inflorescence is known. In the type specimen the leaves at a node 
are more nearly equal than in the Santander material cited. 
Pilea lippioides may be identical with P. obetiaefolia, known only from a single 
pistillate plant, in which the petioles and nerves on the under surface of the 
leaves are distinctly hirtellous. The specimens here cited as P. lippioides have no 
vestige of pubescence. Until further collecting is done in the northwest part of 
Colombia and staminate material of P. obetiaefolia discovered, it seems best to 
regard the two as distinct. 
15. Pilea obetiaefolia Killip, Journ. Washington Acad. Sci. 13: 359. 1923. 
Erect herb about 30 cm high, the stem simple (?), glabrous, or the younger 
portions hirsutulous; petioles hirsutulous, those of a pair unequal, the longer up 
to 4 cm, the smaller up to 2 cm; leaves oblong-lanceolate, 5 to 10 cm long, 2 to 4 cm 
wide (those of a pair slightly unequal), short-acuminate, crenate-serrate nearly 
to base, the nerves hirsutulous beneath, the cystoliths fusiform, conspicuous on 
both surfaces; plants apparently dioecious; pistillate flowers in compact cymes; 
achenes broadly ovate. 
Distribution: Known only from the type locality, in the northern part of the 
Western Cordillera of Colombia. 
Colombia. 
Caldab: Cerro Tatamd, alt. 2,700 meters, Pennell 10374 (US, type). 
16. Pilea hitclicockii Killip, Journ. Washington Acad. Sci. 10: 297. 1925. 
Plant herbaceous, the stem repent, at length erect or suberect, 15 to 30 cm 
high, ferruginoufl-strigillose \ leaves of a node subequal, narrowly elliptic to 
484 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
rhombic-ovate, 2 to 10 cm long, 0.7 to 3 cm wide, acute or acuminate, coarsely 
crenate-serrate or sinuate-serrate, strigillose on the nerves beneath, otherwise 
glabrous, the narrower leaves penninerved, the broader ones triplinerved; cysio- 
liths faint, linear and subpunctate above, punctate beneath; plants monoecious, 
the cymes unisexual (staminate at lower nodes, pistillate at upper), slender- 
peduncledj-etaminate flowers about 2 mm wide, the segments with a filiform tip 
about 1 mm long; achenes broadly ovoid, strongly compressed, about 1 mm long. 
Distribution : Central Ecuador, 
Ecuador: 
Tungurahua: Pastaza River, alt. 1,500 meters, Hitchcock 21825 (G, US, 
type, Y). 
Napo-Pastaza*. Tena, alt. 400 meters, Mexla. 7177 (US), 
In the type specimen the leaves are all penninerved, but in the more ample 
type material at the Gray Herbarium and in the Mex fa collection the broader 
leaves are distinctly triplinerved. 
17. Pilea sublobata Rusby, Bull. Torrey Club 28: 311. 1901. 
Plant lax, the stem and branches very slender, glabrous; leaves ovate, oblong, 
or oblong-lanceolate, 0.5 to 2 cm long, 0.3 to 1 cm wide (rarely a few larger), 
thin, slender-petioled, coarsely crenate-serrate, glabrous, obscurely triplinerved, 
the lateral nerves not extending beyond lower quarter of margin; cystoliths linear, 
faint; plants monoecious, the staminate and pistillate cymes in the axils of the 
upper leaves, often both in same axil, the peduncles of the staminate slightly 
longer than those of the pistillate. 
Distribution: Western Bolivia. 
Bolivia. 
La Paz: Unduavi, B-uchtien 383 (F, K), 794 (B, F, G, US, Y); Rusby 1484 
(Y, type). Pongo, alt. 3,600 meters, Tale 184 (Y). 
18. Pileapauciserrata Killip, Journ. Washington Acad. Sci. IK: 293. 1925. 
Low slender herb, glabrous throughout, the stem repent, at length erect; leaves 
narrowly obovate or oblanceolatc, 6 to 20 cm long, 2 to 5 cm wide, cuneate- 
attenuate at base, sharply serrate with divaricate teeth, the cystoliths on upper 
surface linear, on lower punctiform; plants apparently dioecious; staminate 
flowers sessile or short-pedicelled in few-flowered pedunculate heads. 
Distribution: Western Bolivia. 
Bolivia. 
La Paz: Unduavi, Buchiicn 2811 (US, type), 8935 (US). 
19. Pilea trichosanthea Wedd. in DC. Prodr. 16': 120. 1869. 
Prostrate or repent, much-branched, slender, glabrous herb; stipules about 1 
mm long; leaves unequal, opposite or sometimes in 4's due to the presence of a 
short branch, the larger leaves oblong or oblanceolate, 0.8 to 2 cm long, 3 to 7 
mm wide, subacute at apex, cuneate at base, oblique, coarsely serrate above 
middle, 1-nerved, the smaller ones subrotund, 2 to 4 mm wide, sessile, entire or 
2 or 3-toothed, 1-nerved or obscurely triplinerved, the cystoliths filiform, about 
1 mm long, conspicuous on the upper surface, fewer and obscure beneath; plants 
dioecious; staminate cymes sessile or short-peduncled, 3 to 5-flowcred, the perianth 
segments pilosulous without. 
Distribution: Ecuador. 
Ecuador. 
EoLfVAit: Between Guranda and Bodegas, Remy (P, type). 
Napo-Pastaza: Canelos, alt. 300 to 400 meters, Mexia 6881 (US). Tena, 
Mexia 7178 (US), 721! (US). 
This species I placed in Fallaces because of the 1-nerved leaves of the type 
specimen. In the recent Mexia collections the smaller leaves are obscurely 
KILLIP—ANDEAN SPECIES OF PILE A 
485 
triplinerved. The type has the crowded leaves characteristic of Diver aifoliae, but 
in the Mexfa specimens the leaves are in pairs. 
30. Filea fallfti Wedd. in DC. Prodr. 161: 120. 1869. 
Pilea fallax var. glabra Wedd. in DC. Prodr. 161: 121. 1869. 
Plant suffrutescent or small examples herbaceous, the lower portion of stem 
stout, woody, radicant, with numerous erect branches up to 50 cm high, densely 
hirsute above with hyaline hairs; stipules cordate-ovate, up to 8 mm long, per- 
sistent ; larger leaves ovate or ovate-lanceolate, 2 to 4.5 cm long, 0.8 to 2 cm wide 
(rarely much smaller), acuminate or subobtuse at apex, acute or rounded at base, 
coarsely serrate, entire at base, petiolate, dark green and usually densely hirsute 
with white or brown, hyaline hairs above, appressed-ferruginous-hirtellous on 
nerves beneath, or the leaves glabrous throughout; smaller leaves broadly ovate 
or suborbicular, 0,5 to 1.5 cm long, acute; cystoliths linear or fusiform, con- 
spicuous especially on the paler lower surface of the leaves; staminate cymes 
8 to 12-flowered, short-peduncled; pistillate cymes 3 to 7-flowered, subsessile or 
on peduncles up to 6 mm long, the perianth segments subequal, broadly ovate, 
about 2 mm long, acutish, bearing coarse linear cystoliths without; achene broadly 
ovate, about 2 mm long, 1.2 mm wide. 
Distribution: Western Venezuela and Colombia to Ecuador, at 2,700 to 
3,000 meters altitude. 
Venezuela. 
M£rida: Mucunut£n, Gehriger 592 (US). 
Colombia. 
Cundinamabca: Fusagasug&, Guevara F.l (US). 
Caldas: Cerro TatamA, PenneU 10376 (G, US), 10377 (US). Salento, Pennell 
9336 (G, Ph, US, Y), 9401 (US, Y). 
El Cauca: PaletarA, PenneU 6944 (G, Ph, US, Y). Mount Puracd, Killip 
6777 (G, US). San Jos6, PenneU & Killip 7336 (G, Ph, US, Y), 7375 
(G, Ph, US, Y); Pennell 7559 (G, Ph, US, Y). El Tambo, Sneidern 
414 (S), 964 (S), 965 (S). 
NabiKo: Cocha, StUbel 362b (B). P&ramo Chimbal&n, Andri 2987 (F, K, 
Y). Tabano, Andri 3035 (K), K1674 (K, Y), K1675 (K). Quebrada 
Yacuco, Andri K725 (K), K1676 (K). Minas, Lehmann K332 (K). 
Ecuador. "In Andes," Spruce 6107 (K, type of P. faUta var. glabra, V). 
Pichincha: San Florencio, Andri K724 (K). 
Tungurahua: Spruce 6106 in part (BM, Gen, K, type, V, Y). 
These specimens vary somewhat in degree of indument and shape and size of 
the leaves. In Spruce 6107 and Sneidern 414 the foliage is glabrescent. Most of 
the specimens have short-acuminate or subobtuse leaves, but in this same Sneidern 
plant they are rather long-acuminate. Guevara F.l is a variant with very small 
leaves, none of them being over 1 cm long. 
01. Pilea vegasana Killip, Contr. U. S. Nat. Herb. 26:379. 1936. Plats 31. 
Distribution: Eastern Cordillera of Colombia, at an altitude of about 2,600 
meters. 
Colombia. 
Santander: Las Vegas, Killip & Smith 16020 (G, US, Y), 16025 (G, US, Y), 
16043 (G, Gen, US, type, Y), 16082 (G, US, Y), Mount San Vicente, 
near Charta, Killip <fc Smith 18968 (G, US, Y). 
Explanation or Plat* 31—Pilea vegatana, the type specimen. One-half natural site. 
115159— 39 
486 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
IV. Diversifoliaei 
22. Filea nutans (Poepp.) Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 196. pL 7, 
/. 11-18. 1856-57. 
Urtica nutans Poepp.; Wedd. Arch. Mus, Hist. Nat. (Paris) 9: 196. 1356-57, 
as synonym. 
Pilea herrerae Mildbr. in Herrera, Anal. Univ. Cuzco 1: 147. 1926, name only. 
Plant diffuse, much-branched glabrous throughout; leaves appearing in 4's 
(rarely in 3's), due to the presence at each node of a pair borne on very short 
branchlets, serrate or crenate-serrate, triplincrved, bearing linear cystoliths on 
both surfaces, those of the upper surface smaller and more numerous, the larger 
leaves rhombic-ovate or rhombic-lanceolate, 0.8 to 2.5 cm long, 0.4 to 1.5 cm wide, 
acute or acuminate at both ends, the petioles 1 to 10 mm long, the smaller leaves 
rhombic or broadly ovate, up to 5 mm long, sessile or short-petioled; plants 
dioecious; staminate cymes small, sessile or short-peduncled, few-flowered, the 
flowers pedicellate, about 1 mm wide, the lobes obtuse, mucronate; pistillate cymes 
shorter than the leaves; achencs obliquely rounded. 
Distribution: Peru and Bolivia, at 800 to 2,200 meters altitude; apparently 
also in northeastern Colombia. 
Colombia. 
Norte DE Santander: Ocana, alt. 1,050 meters, Sehlim 1134 (Brux); alt. 
2,100 meters, Triana (HNC), 492 (P, labeled "Province d'Antioquia," 
but clearly a part of the Triana Ocafia collection). 
Peru: Dombey (P); HaenJce 1731 (Y). 
HuXnuco: Cochero, Poeppig 1565 (B, BM, Gen, P, type, V). 
JuNfrr: Huacapistana, Killip <fc Smith 24274 (F, US, Y). Dos de Mayo, 
Pichis Trail, Killip & Smith 25789 (US, Y). Porvenir, Pichis Trail, 
Killip & Smith 25895 (F, US, Y). Pasla, Raimondi 9290 (B). 
Cuzco: Rfo Yanamayo, Pennell 14049 (F, Ph, US, Y). Urubamba Valley, 
Cook & Gilbert 1095 (US). Cosfiipata Valley, Herrera 6 (B). La Maquifia, 
West 8035 (G). 
Puno: Ollachca, Raimondi 9649 (B). 
Bolivia. 
Cochabamba: Incachaca, Steinbach 8890 (B, F, Ph, S). 
Santa Cruz: Province of Sara, Steinbach 5028 (B, F, G, Y). 
Most of the specimens cited above are without a well-developed inflorescence, 
either staminate or pistillate, and I have merely reproduced Weddell's description 
of the inflorescence in the Prodromus, which differed slightly from his earlier one. 
Killip <fc Smith 25895, a staminate plant, has mature flowers, but they are in 
compact clusters on filiform peduncles 1.5 to 2 em long, a floral arrangement at 
variance with Weddell's description. As the leaves, moreover, are not congested, 
it is quite possible that this collection represents an undescribed species. The 
Colombian specimens, also with good staminate flowers, are far out of range 
and may likewise belong elsewhere. Triana's 492 I cited (p. 384) as P. rojasiana, 
but having compared the additional Colombian material with tlie type of that 
species, I am inclined to think that it is better placed in P. nutans, under which 
it was listed by Weddell. 
In the six species of the group Diversifoliae the leaves are very numerous and 
appear to be in three's or in four's at a node. This is due to the fact that at most 
of the nodes there is a very short branch which usually bears a single pair of leaves, 
one large, one small. Sometimes this second small leaf is wanting, so that there 
are three leaves associated with the node; sometimes the branch is elongate and 
KILLIP—ANDEAN SPECIES OF PILEA 487 
bears several pairs of leaves, of which the lowermost pair is so close to the stem 
that the leaves appear to be in four's. 
Local names: "Chia-chia," "quiea," "yunca-quisa" (Peru). 
23. Pilea myriophylla Killip, Contr. U. S. Nat. Herb. 26: 379. 1936. Plate 32. 
Distribution: Ecuador. 
Ecuador: Uarunamaca, Andri K1667 (K, type), "4,000-5,000 feet," Pearce (K). 
Explanation or Plate 32.—PiUa myriophylla, portion of type specimen. Natural size. 
24. Pilea diversifolia Wedd. Ann. Sci. Nat. III. Bot. 18: 212. 1852. 
Lax much-branched glabrous herb, the stem up to 1.5 meters long; larger 
leaves of a node cuneate-oblong, 5 to 10 mm long, 1 to 4 mm wide, coarsely 3 to 
7-toothed, 1-nerved (secondary nerves faint), the smaller leaves suborbicular, 
3 to 5 mm wide, entire or few-toothed, faintly triplinerved, the cystoliths linear, 
conspicuous, larger but less numerous on the lower surface; plants dioecious; 
pistillate cymes about 3 mm wide, on peduncles 4 to 5 mm long. 
Distribution: Central Peru, at 1,500 to 2,200 meters altitude. 
Peru: Ruiz Pav6n 4677 (B, BM, type, Ma, US). 
Huanuco: Mufia, Macbride 3984 (F, Gen, K, US). 
JunIn: Dos de Mayo, Pichis Trail, Killip <& Smith 25885 (F, US, Y). 
Ayacucho: Ccarrapa, between Hlianta and Rfo Apurimac, KiUtp & Smith 
22357 (F, US, Y). 
25. Pilea weberbaueri Killip, Contr. U. S. Nat. Herb. 26: 380. 1936. Plate 33. 
Distribution: Known only from the type specimen, from central Peru. 
Pbru. 
JuNfN: Between Palca and Huacapistana, alt. 1,900 to 2,000 meters, Weber- 
bauer 2022 (B, type). 
Explanation ot Plats 33.—Pilea webcTbaiuri, the type specimen. About one-bait natural size. 
26. Pilea pulegifolia (Poir.) Wedd. Ann. Sci. Nat. III. Bot. 18; 213. 1852. 
Vrtica pulegifolia Poir, in Lam. Encycl. Suppl. 4: 224. 1816. 
Stem elongate, apparently prostrate but not rooting at nodes, with numerous 
densely tomentellous, leafy branches; stipules ovate, persistent; leaves ovate, 
3 to 6 mm long, 2 to 4 mm wide (those of a node similar but slightly unequal), 
obtuse at apex, cuneate at base, crenate-serrulate with 2 to 5 serrulations on 
each side, glabrous, the petioles up to 2 mm long, tomentellous, the cystoliths of 
upper surface linear, yellow, thick, white and less conspicuous beneath; staminate 
flowers in small cymes in the upper axils, the peduncles longer than the petioles, 
puberulent. 
Distribution: Known only from the type specimen. 
Peru: Churugallana, Dombey (Bo, F, Ma, P, type). 
This and the following species have the curious leaf arrangement of Diversi- 
foliae, but unlike other representatives of the section the branches and petioles 
are densely pubescent. 
27. Pilea ramosissima Killip, Contr. U. S. Nat. Herb. 26: 380. 1936. 
Distribution: Central Peru, at 2,500 to 2,800 meters altitude. 
Peru. 
Ca jam arc a: Hualgayoc, Raimondi 7092 (B). 
HuZnuco: Chaglla, Macbride 3650 (B, F, K, US, type), 
V. Imparifoliab 
28. Pilea fillcina Killip, Jourti. Washington Acad. Sci. IS: 355. 1923. 
Plant glabrous throughout, frutescent, pinnately branched, the branches divari- 
cate; larger leaf ovate-orbicular, 10 to 13 mm long, 6 to 7 mm wide, 5-crenate 
488 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
toward apex, abruptly tapering at base, sessile or subsessile; smaller leaf reniform- 
orbicular, 4 to 6 mm wide, sessile, entire or undulate, triplinerved; cystoliths on 
upper surface of leaves linear, faint, borne mainly near margin, those on lower 
surface numerous, punctiform; plants apparently dioecious; pistillate heads 
subglobosc, 3 or 4-flowered, sessile or subsessile; achenes broadly ovate, 1 mm 
long. 
Distribution: Eastern Cordillera of Colombia. 
Colombia. 
Cundinamarca: Palme, Ariste Joseph A927 (BM, Bog, US, type, Y). 
29. Pilea bassleriana Killip, Contr. U. S. Nat. Herb. 26: 381. 1936. 
Distribution: Amazonian Peru, at low elevations; also in southwestern 
Colombia. 
Colombia. 
El Cauca: La Costa, Sneidern 1025 (S, US), 1614 (S). 
Peru. 
Loreto: Balsapuerto, alt. 150 to 350 meters, Killip Smith 28429 (F, US, 
Y), 28467 (F, US, Y), 28471 (F, US, type, Y); Klug 2870 (F, G, Gen, 
US, Y). Santa Rosa, below Yurimaguas, Killip & Smitfi 28993 (US, 
Y). Pongo de Manseriche, Dennis (Killip & Smith 29145; US, Y); 
Teasmann 4603 (B), 4667 (B); Mexla 6355 (US), 6360 (US). Mouth of 
Rfo Pastaza, Dennis (Killip & Smith 29196; US, Y). 
30. Pilea daguensis Killip, Contr. U. S. Nat. Herb. 26: 382. 1936. Plate 34. 
Pilea dendrophilct var. major Wedd. in DC. Prodr. 16 *: 122. 1869. 
Plant herbaceous, the stem repent, the branches erect, sulcate, 30 to 40 cm 
high, stout, glabrous; stipules ovate, 3 to 4 mm long, subpersistent; leaves dark 
green and glabrous above, bearing faint linear cystoliths, beneath paler, puberu- 
lent on the nerves, bearing punctiform cystoliths; leaves of a pair dissimilar and 
very unequal, the larger ones oblanceolate, 7 to 9 cm long, 1.2 to 3 cm wide, 
acuminate at apex, oblique and subemarginate at base, borne on petioles 2 to 3 
mm long, coarsely erenate-serrate except in the lower third (teeth obtuse or rarely 
acutish, 8 or 9 to a side), triplinerved, the smaller leaves inequilaterally ovate or 
suborbicular, 5 to 10 mm long and wide, obtuse, obliquely cordate at base, sessile, 
entire or slightly undulate, obscurely triplinerved; plants dioecious, the cymes 
similar, 5 to 8 mm wide, subsessile, the staminate perianth with slender teeth, 
the segments of the pistillate perianth subequal; achenes nearly orbicular, 0.5 
mm wide. 
Distribution: Western Colombia, at low elevations. 
Colombia: Triana 889 (B, BM, perhaps part of type collection, K, P, US). 
El Choc6: Tutunendo, Archer 2129 (US). Headwaters of Rfo Tutunendo, 
Archer 2172 (US). 
El Valle: "Province of Buenaventura, 300 meters," Triana (BM, type, 
also type of P. dendropkila var. major, HNC). Santa Rosa, Rfo Dagua, 
Killip 11550 (B, G, Ph, US, Y). 
El Cauca: El Tambo, Sneidern 772 (S). 
Explanation or Plate 84.—Pilea daguensis. Killip 11550, one-lmlf natural size. 
31. Pilea imparifolia Wedd. Ann. Sci. Nat. III. Bot. 18: 212. 1852. 
Pilea dendropkila Miquel in Mart. Fl. Bras. 4 ]: 202. 1853. 
Decumbent herb with numerous suberect branches; larger leaves rhombic-ovate 
to elliptic-oblong or obovate, 2 to 6 cm long, 0.8 to 2 cm wide, narrowed at apex, 
acute or attenuate at base, oblique, sessile or short-petioled, crenate-serrate above 
middle, obscurely triplinerved, the smaller leaves obovate-orbicular or orbicular- 
KILLIP—ANDEAN SPECIES OF PILEA 489 
reniform, 0.8 to 1.5 cm long, strongly asymmetrical, subentire; cystoliths linear on 
upper leaf surface, punctiform, rarely linear beneath; plants dioecious, the stami- 
nate and pistillate cymes sessile or subsessile, few-flowered; segments of staminate 
flowers mucronulate; achenes about 1 mm long. 
Illustration: Arch. Mus. Hist. Nat. (Paris) 9: pi. 7, /, 1-8. 
Distribution: Colombia to northern Peru, eastward to the Guianas and Ama- 
zonian Brazil; at low elevations. Type from French Guiana, collected by Melinon 
(no. 55). 
Colombia: Triana (P); Dawe 772 (K, US). 
BoLfvAR: Rio Esmeralda, Pennell 4541 (US, Y). 
El Choo6: La Concepci6n, Archer 2081 (US). Rio Tutunendo, Archer 
2190 (US). 
Caldas: Salento, KiUip & Hazen 8786 (fi, G, Ph, US, Y). 
El Valle: La Cumbre, KiUip 5698 (G, Ph, US, Y). 
El Cauca: El Tambo, Sneidern 895 (S). 
Putumayo: Umbria, King 1931 (B, BM, F, G, US, Y). 
Ecuador. 
Oro: Santa Rosa, Jameson 734 (BM, K), 
Peru. 
San MartIn: Tarapoto, Spruce 4434 (B, BM, Brux, K, P, V, Y). 
Loreto: Rfo Itaya, Killip & Smith 29308 (F, US, Y), 29515 (F, US, Y), 
29572 (F, US, Y). Mouth of Rfo Santiago, Mexia 6365 (US). Mouth 
of Rfo Napo, Tessmann 3721 (Bas, Gen). Maucallacta, King 3950 
(US). Between Rfo Ucayali and Rio Huallaga, Huber 1519 (Go). 
JuNiN: San Nicol&s, Pichis Trail, Killip & Smith 26038 (US, Y). 
These specimens show considerable variation in the size and shape of the larger 
leaves, those with small leaves approaching P. Jilieina and those with large ones 
P. bassleriana. 
Local name: "Estrella caracha" (Putumayo). 
VI. Centradenioideae 
82. Filea trianaeana Wedd. in DC. Prodr. 161 : 121. 1869. 
Stem radicant, at length erect to a height of about 15 cm, puberulous or subgla- 
brous; larger leaf oblong or elliptic-oblong, 8 to 16 cm long, 3 to 6 cm wide, acumi- 
nate at apex, acute at base with a slender petiole 1 to 3 cm long, crenate-serrate, 
glabrous above, often sparsely pilose on the nerves beneath, the smaller leaf similar, 
2 to 4 cm long, 0.3 to 1.3 cm wide, acute or acuminate, the cystoliths linear and 
punctiform, conspicuous on upper surface; plants dioecious; staminate flowers in 
loose cymes in the upper axils, the peduncles about 1 cm long, the tips of the 
perianth segments filiform, 1 to 1.5 mm long; pistillate flowers in lax, pedunculate 
panicles up to 5 cm long; achenes about 1 mm long. 
DISTRIBUTION: Western Colombia, at elevations up to 1,000 meters. 
Colombia. 
BolIvar: Boca Antizales, Pennell 4502 (Y). 
El Choc6: La Concepci6n, Archer 1977 (US). 
El Valle: Rio Dagua, Triana (BM, P, type). 
S3. Pilea centradenioides Seem. Bot. Voy. Herald 194. 1854. 
Semi-epiphytic herb, the stem repent in the lower part, strigose-hirsute; stipules 
ovate-oblong, 6 to 10 mm long, thin-membranous, subpersistent; leaves coarsely 
dentate-serrate, trinerved or subtriplinerved, sparingly pubescent above with hya- 
line hairs, or glabrous, appressed-pilose on the nerves and veins beneath, white- 
490 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
striped along the nerves, the cystoliths of the upper surface linear, not more than 
0.3 mm long, those of the lower surface similar but slightly longer, obscure, the 
leaves of a node strongly unequal and dissimilar, the larger elliptic-lanceolate, 
rarely oblanceolate, 3 to 15 cm long, 1 to 5 cm wide, caudatc-acuminate at apex, 
subcuneate at base, the petiole 1 to 5 cm long, the smaller one ovate or rhombic- 
ovate, 1 to 2.5 cm long, 7 to 13 mm wide, acute, sessile or with a petiole 3 to 5 mm 
long; plants dioecious; staminate cymes shorter than the longer of the adjacent 
petioles, at length up to 2 cm wide, pedunculate, the perianth globose, about 1.5 
mm in diameter, the lobes with filiform tips 1.5 to 2 mm long. 
Distribution: Northwestern Colombia and in the Magdalena Valley; at low 
elevations: 
Colombia. 
Santandeb: Barranca Bermeja, IIaught 1274 (US), 1305 (US), 1592 (US). 
BoyacA: El Humbo, Lawrance 652 (F, US). 
El Choc6: Cape Corrientes, Seemann 1099 (BM, K, type), Taman 
Triana 887 (HNC, K, P). 
Haught's field notes state that this is a delicate, semi-epiphytic herb, growing on 
the base of trees. His specimens are larger in every way than the Seemann type. 
In the Triana material the leaves are more densely pubescent, and their teeth more 
rounded. 
34. Pilea seemannii Killip, Contr. U. S. Nat. Herb. 20: 382. 1936. 
Pilea variegata Wedd. in DC Prodr. 18 123. 1869. Not P. variegaia Seem., 
1854, a transfer of Uriica variegaia Spreng. 
Stem repent at base, at length erect, 25 cm high or more, appressed-ferruginous- 
hirsute; leaves of a node strongly unequal and dissimilar, the larger one ovate or 
elliptic-lanceolate, 6 to 11 cm long, 2 to 3 cm wide, oblique, acuminate at apex, 
sharply serrate, glabrous and longitudinally white-fasciate above, appressed- 
hirsute on the nerves, the petiole up to 5 mm long, the smaller leaf ovate or orbicu- 
lar-ovate, 5 to 8 mm long, rounded or cordulate, crenate-serrate, sessile; cystoliths 
on upper surface of leaves very conspicuous, linear, nearly 1 mm long, straight 
or bent, numerous, those of the lower surface few and inconspicuous; plants di- 
oecious, the staminate and pistillate cymes similar, 8 to 10 mm wide, the peduncles 
slender, 3 to 6 mm long; staminate perianth with filiform lobes; pistillate perianth 
with subequal segments; achenes ovate, 1 to 1.5 mm long. 
Distribution: Western Colombia, at low elevations. 
Colombia. 
El Choc6: Alt. 100 meters, Triana 888 (B, BM, HNC, K, P, US). Cape 
Corrientes, Seemann (BM, type of P. variegata Wedd., P). 
El Valle: C6rdoba, Killip 5117 (G, Ph, US, Y). 
This is a striking plant in the dense jungle about CArdoba. The numerous 
erect branches arise in clumplike masses from the thick repent stem and bear 
nearly equally spaced, distichous leaves, conspicuously marked above along the 
nerves with white lines. In the type specimen the larger leaves are ovate; in 
Triana's no. 888 elliptic-lanceolate. 
Many of the Triana specimens of Pilea are labeled "Prov. de Barbacoas y 
Chocd." As many of the species represented by them are of a very local distri- 
bution, I believe it is an error to assume from Triana's records that the species 
occurs in both southwestern and northwestern Colombia. 
35. Pilea co&tata Killip, Contr. U. S. Nat. Herb. 26: 382. 1936. 
Distribution: Known only from the type locality, eastern slopes of the Andes 
of Peru. 
Peru. 
JunIn: Enefias, alt. 1,700 meters, Killip & Smith 25638 (US, type). 
KILLIP—ANDEAN SPECIES OF PILEA 491 
36. Pilea pichisana Killip, Contr. XJ. S. Nat. Herb. 36: 383. 1930. 
Distribution: Known only from the type locality, eastern slopes of the Andes 
of Peru. 
Peru. 
JunIn: Dos de Mayo, Pichis Trail, alt. 1,800 meters, Killip & Smith 25876 
(F, US, type, Y). 
36a. Pilea scandens Killip, sp. nov. Plate 35. 
Suffrutescens, scandens, glaberrima, ramosissima, dioica; stipulae minimae, 
deciduae; folia serrata vel crenato-serrata, trinervia, cystolithis fusiformibus, in 
pagina superiore elevatis, laminis in eodem jugo inaequimagnis et dissimilibus, 
maj ore lanceolato-ovata, acuminata, cordulata, breviter petiolata, minore ovato- 
reniformi vel cordato-reniformi, sessili; cymae 9 3 vel 4-florae, breviter peduncu- 
atae. 
Plant scandcnt, suffrutescent, glabrous throughout, much-branched, the 
branches slender, elongate; stipules narrowly ovate, about 0.5 mm long, acute, 
soon deciduous; leaves thick, serrate or crenate-serrate (teeth usually incurved, 
mucronulate), trinerved, asperulous on both surfaces, dark green above, black- 
punctate and paler beneath, with the nerves and veins much darker than the 
leaf surface, the cystoliths short-fusiform, obscure, slightly elevated on the upper 
surface; leaves of a node unequal and dissimilar, the larger lance-ovate, 1,5 to 
3 cm long, 8 to 13 mm wide, acuminate at apex, cordulate or rarely slightly 
narrowed at base, the petiole 1 to 2 mm long, the smaller leaf ovate-reniform or 
cordatc-reniform, 4 to 5 mm long, 5 to 9 mm wide, sessile, subacute at apex; 
plants dioecious; pistillate cymes (undeveloped) very short, 3 or 4-flowered, the 
peduncles about 1 mm long, the perianth segments unequal. 
Type in the herbarium of the Hiksmuseum, Stockholm, collected in virgin 
forest, La Costa, near El Tambo, Department of El Cauca, Colombia, altitude 
1,300 meters, July 28, 1936, by Kjell von Sneidern (no. 881). Duplicate at US. 
Distribution: Central and Western Cordilleras of Colombia, at 1,300 to 1,800 
meters altitude. 
Additional specimens examined: 
Colombia, 
Caldas: Rfo Santa Rita, near Salento, Killip <fc Hazen 10129 (G, Pfa, US, Y). 
El Cauca: La Gallera, Micay Valley, Killip 7678 (G, Ph, US). 
This last specimen was cited (p. 384) as P. rojasiana; it was sterile, and I believed 
at the time that in all probability it represented an undescribed species. Better 
material collected by Sneidern permits a diagnosis. In general habit this species 
resembles P. rojasiana, but the larger leaves are of a different shape, the toothing 
of the leaves is more pronounced, and the cystoliths are dissimilar. 
Explanation or Piate 35 —Pifea tcandem, the typo specimen. One-half natural die. 
37. Pilea rojasiana Killip, Contr. U. S. Nat. Herb. 26: 383. 1936. 
DISTRIBUTION: Southwestern Colombia. * 
Colombia. 
El Cauca: San Josfi, near San Antonio, Western Cordillera, west of PopayAn, 
alt. 2,400 to 2,700 meters, Pennell & Killip 7373 (US, type); Sneidern 
1396 (S). 
Triana's no. 492, cited under this species on page 384, is better placed in P. 
nutans. Killip's no. 7678, which was also cited as P. rojasiana, is rather P. scan- 
dens, as noted above. 
38* Pilea crugeriana Wedd. in DC. Prodr. 161: 122. 1869. 
Succulent suffrutescent herb, glabrous throughout; stem densely covered with 
obscure linear cystoliths; stipules early deciduous; leaves of a node very unequal 
but rather similar in outline, coarsely crenate-serrate nearly to base, caudate- 
acuminate at apex, subrotund at base, 3-nerved (lateral nerves extending to base 
492 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
of acumen), bearing on both surfaces numerous small stellate cystoliths with 3 
slender rays, the larger leaves ovate-lanceolate, 3 to 12 cm long, 1 to 3 cm wide, 
with petioles up to 1.2 cm long, the smaller leaves ovate, 1 to 2.5 cm long, 6 to 15 
mm wide, subsessile; plants monoecious (always?), the cymes unisexual or an- 
drogynous, subsessile, shorter than the adjacent petioles, the staminate flowers 
sessile, the pistillate (at most only a very few to a cyme) short-pediceled. 
Distribution: Venezuela. 
Venezuela: Cr&ger 46 (K, type); Gollmer in 1852 4 (B). Dos Aguados, Ffrnst 
1706 (BM). 
Araqua: Between El Castafio and summit, alt. 1,100 meters, Pittier 13898 
(US). 
Although not noted by Weddell, the foliar cystoliths of P. crugeriana are 3-rayed, 
similar to those of P. maTginata and P. triradiata. Both of these species, however, 
have the leaves at a node equal and similar, and in the present treatment occupy 
a position remote from P. crugeriana, 
39. Filea haenkei Killip, Contr. U. S. Nat. Herb, 26: 384. 1936. 
Distribution: Known only from the type specimen. 
Peru: "Montafia," Haenke 1870 (Pr, type). 
40. Pilea macrocystolithica Killip, Contr. U. S. Nat. Herb. 26: 384. 1936. 
Plant herbaceous, glabrous throughout, the stem simple, about 30 cm high, 
densely covered with longitudinal, linear cystoliths; stipules triangular-ovate, 
about 1.5 mm long, obtuse, deciduous; leaves of a node dissimilar and unequal, 
the larger ovate or ovate-lanceolate, 4 to 6 cm long, 2 to 3 cm wide, obtuse or 
obtusely acuminate at apex, rounded at base, short- (3-8 mm) petiolate, serrulate 
nearly to base (serrulations with filiform tips), trinervcd, the smaller leaves sub- 
orbicular, 1.5 to 2 cm wide, subsessile; cystoliths of upper surface of the leaves 
very numerous, linear, elevated, 0.7 to 0.8 mm long, those of the lower surface 
shorter and obscure; plants apparently dioecious,the staminate cymes subglobose, 
the peduncles about 2 cm long. 
Distribution: Known only from the type specimen. 
Peru: "Montafia," Haenke 1860 (Pr, type). 
In the original account of this species a line in the description of the cystoliths 
on page 385 was omitted. A redescription is therefore here presented. 
41. Filea hydrocotyliflora Killip, Contr. U. S. Nat. Herb. 26: 385. 1936, 
Distribution: Known only from the type locality, in the northern part of the 
Eastern Cordillera of Colombia. 
Colombia. 
Norte de Santander: Ocafia, alt. 1,800 meters, Kalbreyer 691 (B, type, K). 
42. Pilea macrantlia Killip, Contr. U. S. Nat. Herb. 26: 385. 1936. 
Distribution: Known only from the type locality, in southwestern Colombia. 
Colombia. 
Nahi^o: Alto del Tabano, Cordillera de Pasto, Andri K1670 in part (K, 
type). 
43. Pilea tetrapoda Killip, Contr. U. S. Nat. Herb. 26: 386. 1936. 
Distribution: Known with certainty only from the type locality, in central 
Ecuador. 
4
 The words "Caracas, Gollmer" have been added to Gollmer's original labels 
and are in another's writing. Most of the Gollmer specimens represent very rare 
species, not re-collected about Caracas during the course of intensive exploration 
subsequent to Gollmer's time. I suspect that these plants were actually collected 
in some other part of Venezuela. 
KILLIP—ANDEAN SPECIES OF PILEA 493 
Colombia. 
NariRo: Alto del Tabano, Cordillera de Pasto, Andri K1670 in part (K). 
Tambo Savanilla, Andri K1671 (K). 
Ecuador. 
Tungurahua: Palmera, Rfo Paataza, between Bafios and Mera, alt. 1,200 
meters, Tate 665 (US, type). 
As noted on page 386, the Colombian specimens are doubtfully referred here. 
VII. FliEXTJ08AE 
44. Filea llezuosa Wedd. Ann. Sci. Nat. III. Bot. 18: 218. 1852. 
Pilea hazeni Killip, Journ. Washington Acad. Sci. 13: 355. 1923. 
Plant glabrous throughout, the stem repent or scan dent, much branched, the 
younger portion stramineous; stipules ovate-orbicular, 4 to 6 mm long, persistent; 
leaves of a pair dissimilar and unequal, rarely similar and subequ&l, crenate-serrate, 
subcoriaceous, the cystoliths linear, numerous and conspicuous, the larger leaves 
ovate-lanceolate, rarely broadly ovate, 2 to 6 cm long, 1.5 to 4 cm wide, acuminate 
at apex, rounded or cordulate at base, the petioles 1 to 3 cm long, the smaller 
leaves suborbicular, 1 to 2 cm wide, abruptly acute, cordulate, the petioles 5 to 10 
mm long; plants dioecious; pistillate cymes few-flowered, borne in the upper axils 
on filiform peduncles; achenes broadly ovate, nearly 2 mm long. 
Distribution: Central Cordillera of Colombia and northern Ecuador. 
Colombia. 
Caldab: Quindfo mountains, Goudot (BM, P, type). Salento, alt. 1,600 
to 1,800 meters, Killip & Hazen 9007 (US), 10121 (G, Ph, US, type of 
P. hazeni, Y). 
Ecuador. 
Pichincha: Mount Pichincha, Jameson 789 (BM, Gen, K, US), Mount 
Coraz6n, Sodiro 153/26 (B). Lloa Valley, Hall 5 (K). 
Weddell placed this among the species with similar and subequal leaves; in the 
type they are, however, rather strongly dissimilar, though less so than in the type 
of P. hazeni and in the other Killip and Hazen specimen. In the Ecuadorean ma- 
terial the leaves at a node are more nearly equal and more similar. 
45. Pilea cymbifolia Rusby, Bull. Torrey Club 28:311. 1901, 
Pilea urerijolia Rusby, Bull. Torrey Club 28: 312. 1901. 
Plant suffrutescent, erect, 30 cm high or more, glabrous throughout; stipules 
ovate, 4 to 8 mm long; larger leaf elliptic-lanceolate, 8 to 20 cm long, 2 to 7 cm 
wide, caudate-acuminate, crenate-serrate to base, often subfalcate, petiolate; 
smaller leaf ovate-lanceolate, 1.5 to 3.5 cm long, 0.5 to 1.2 cm wide; cystoliths on 
upper surface minute, punctiform, wanting beneath; plants dioecious or rarely 
monoecious; staminate flowers in dense globose heads 5 to 8 mm wide, on slender 
peduncles up to 1,5 cm long; pistillate flowers in once or twice-dichotomous cyme* 
much shorter than the adjacent petioles; achenes ovate, about 1.5 mm long. 
Distribution: Western Bolivia, at 1,000 to 2,400 meters altitude. 
Bolivia: Rfo Tocorani, Herzog 2305 (B, Gen, V). 
La Paz: Yungas, Rusby 1482 (BM, G, K, Ph, US, Y, type). Sorata, 
1480 (F, US, Y), Unduavi, Rusby 1481 (Y, type of P. urerifolia), Sacra- 
mento, Bang 2374 (A, B, BM, F, G, Gen, K, Mo, Ph, US, V, Y). Coro- 
ico, Buchtien 3751 (Gen, Y), 3752 (US, Y), 3753 (Y). 
This species in many details is similar to P, capitellata, a plant apparently with 
the opposite leaves equal and similar. Pilea urerifolia appears to be only a form 
of P. cymbifolia with proportionately broader leaves. 
115159—39 1 
494 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
VIII. Datjciodokae 
46. Pilea urticella Wedd. in DC. Prodr. 10': 157. 1869. 
Slender repent herb, with numerous erect or ascending, pilosulous branches up 
to 12 cm long, leafy throughout; leaves ovate, 3 to 10 mm long, 2 to 6 mm wide, 
subobtuse at apex, short-petiolate, incised-serrate, thin-membranous, bearing a 
few linear cystoliths, sparingly pilosulous above, hirsute on nerves beneath; 
plants monoecious, the inflorescences androgynous, few-flowered, subglobose, up 
to 5 mm wide, borne in the upper axils on slender peduncles 1.5 to 2 cm long; 
achenes ovate, about 1 mm long. 
Distribution: Known only from the type locality, in north-central Venezuela, 
at 1,200 meters altitude. 
Venezuela. 
Aragua: Colonia Tovar, Fendler 2429 (G, Gen, type, K, Mo, Ph). 
The appearance of this plant, with incised leaves, suggests Urtiea urene. 
47. Pilea lamioides Wedd. Ann. Sci. Nat. III. Bot. 18: 213. 1852. 
Plant glabrous throughout, the stem simple, slender, up to 12 cm high; leaves 
ovate, 1 to 3 cm long (lower as short as 0.3 cm), 0.6 to 2 cm wide, coarsely crenate- 
dentate, obtuse; cystoliths obscure, linear above, punctiform beneath; plants 
monoecious, the cymes at the summit of stem, the staminate flowers short- 
pediceled in sessile clusters, the pistillate sessile in short-peduncled clusters; 
achenes less than 0.5 mm long. 
Distribution: Known positively only from the Department of Lima, Peru, 
at low elevations. 
Peru: Dombey (P, type); Pavdn (P). 
Lima: San Ger6nimo, Macbride 5910 (F, K, US). Atocongo, Penned 14751 
(Ph, Y). Amancais, near Lima, Weberbauer 1594 (B). Hupacd, 
Raimondi 285 (B). 
This is an easily recognized species, resembling Lamium purpureum. 
48. Pilea dombey ana Wedd. Ann. Sci. Nat. III. Bot. 18: 221. 1852. 
Pilea orbiculata Killip, Journ. Washington Acad. Sci. 15: 53. 1925. 
Low, succulent, glabrous herb; stipules broadly ovate, persistent; leaves borne 
mainly near end of branches, nearly orbicular, 0.7 to 2.5 cm long and wide, short- 
petiolate, often cartilaginous-thickened at margin; cystoliths fusiform, very faint; 
plants monoecious or dioecious, the heads unisexual; staminate flowers sessile in 
globose clusters in a few-branched panicle; pistillate flowers in small, densely- 
flowered, sessile or subsessile cymes. 
Distribution: Probably confined to the high mountains of central Peru. 
Peru: "Andes," Dombey (P, type); MacLean (K); "Herb. Hooker 2031" (Y). Be- 
tween Callcan and Pelechuco, alt. 3,600 meters, Pearce in 1864 (K). 
HuXntjco: Chasqui, Macbride 3289 (B, F, type of P. orbiculata, Gen, K, US). 
Pilea dombeyana was wrongly placed by Weddell in the group with long- 
peduncled pistillate cymes. In all the specimens here cited the pistillate cymes 
are sessile, or very nearly so, and much shorter than the petioles. 
49. Pilea serratifolia Wedd. Arch. Mus. Hist. Nat, (Paris) 9:235. 1856-57. 
Plant herbaceous, glabrous throughout, the stem erect or ascending, with 
several short alternate branches 10 to 15 cm long; stipules broadly ovate, 3 to 6 
mm long, divaricate, persistent; leaves ovate, 1 to 3 cm long, 1 to 2.5 cm wide, 
acute at apex, rounded or subcuneate at base, sharply serrate to base, glaucescent 
beneath; staminate flowers in a dense globose head, solitary or in 2's, on slender 
peduncles borne in the upper axils; pistillate cymes sessile in the lower axils; 
achenes about 1 mm long. 
KILLIP—ANDEAN SPECIES OF PILE A 495 
Distribution: Northern Ecuador. 
Ecuador. 
Pichincha: Mount Pichincha, Jameson 834 (BM, Gen, K, type, US); Sodiro 
153/23c (B). 
BO, Pilea. strigosa Wedd. Ann. Sci. Nat. III. Bot. 18: 225. 1852. 
Pilea repens var. strigosa Wedd. in DC. Prodr. 161: 156. 1869. 
Stem repent at base, with few or numerous lax, ferruginous-hirsutulous branches; 
stipules ovate, about 3 mm long, persistent; leaves suborbicular to broadly ovate, 
0.8 to 2.5 em long, 0.8 to 1.5 cm wide (extremes 4.5 cm long, 3 cm vide), rounded 
or subacute at apex, rounded or subtruncate at base, crenate-serrate, usually 
strigose-pilose above, ferruginous-hirsutulous on the nerves beneath; cystokths 
punctiform or short-linear; plants usually monoecious; cymes unisexual, but often 
both kinds borne in the same axil; staminate flowers in compact, subglobose, 
usually long-peduncled cymes, the perianth up to 2 mm in diameter, the lobes with 
conspicuous foliaceous tips; pistillate inflorescence paniculate, pedunculate; 
achenes ovate, about 1 mm long. 
Distribution: Northern and central Peru and western Bolivia, up to 3,000 
meters altitude. 
Peru: Mat hews 2031 (BM, G, K, P, type). 
Loketo: Santa Rosa, Lower Rio Huallaga, Killip & Smith 28835 (F, US, Y), 
28843 (US, Y). 
HujLnuco: Cochero, Poeppig 1552 in part (B, V). 
JuNfn: Dos de Mayo, Pichis Trail, Killip & Smith 25795 (US). 
Bolivia. 
La Paz: Yungas, Bang 687 (B, BM, P, G, K, Ph, US, V, Y). Unduavi, 
Buchiien 85 (B, BM, F, G, Gen, Y), 795 (US), 8938 (US), 8939 (US); 
Julio 462 (US); Rusby 1485 (Y). 
Much of the Bolivian material was distributed as P. daitciodora, a species which 
P. strigosa resembles in general appearance. In addition to being densely 
pubescent, the cystolithic marking is quite dissimilar. 
The range of altitude at which the plant grows is unusually great, the specimens 
from northern Peru having been collected at 135 meters and Buchtien's no. 85 at 
3,300 meters. 
Pilea repens, a West Indian plant with androgynous heads and linear fusiform 
eystoliths, is certainly a distinct species. 
61. Pilea pusilla Krause, Bot. Jahrb. Engler 37: 530. 1906. 
Plant slender, glabrous, up to 10 cm high, the stem filiform; stipules minute, 
soon deciduous; leaves suborbicular or subreniform, up to 1 cm long and 1.5 cm 
wide, obtuse at apex, subtiuncate at base, sharply serrulate, the eystoliths all 
punctiform; plants monoecious, the flower clusters unisexual or androgynous, 
forming slender-peduncled panicles; achenes ovate, about 0.75 mm long. 
Distribution: Known only from the type locality, in central Peru. 
Peru. 
Jun{n: Palca, alt. 1,900 to 2,000 meters, Weberbauer 2023 (B, type). 
#0. Pilea delicatula Killip, Journ. Washington Acad. Sci. 15: 51. 1925. 
Plant up to 10 cm high, glabrous throughout; leaves ovate-lanceolate, 1 to 1.5 
cm long, 0.5 to 1 cm wide, acute, rounded or subcuneate at base, sharply serrate, 
the teeth mucronate; eystoliths on upper surface few, linear, faint, punctiform on 
lower surface; plants dioecious (?); pistillate flowers in globose, about 6-fiowered, 
short-pedunculate cymes, the flowers pendent; achenes broadly ovate, 1.5 mm long. 
496 CONTRIBUTIONS PROM THE NATIONAL HERBARIUM 
Distribution: Known only from the type locality, in central Peru. 
Peru. 
HuAnuco: Tambo de Vaca, alt. 4,000 meters, Macbride 4400 (B, F, type, Gen, 
Kf US). 
53. Pilea elliptic a Hook. f. Fl. Antarct. 344. 1847. 
Pilea ckilensis Wedd. Ann. Sci. Nat, III. Bot. 18: 221. 1852. 
Pilea pedunculate Blume, Mus. Bot. Lugd. Bat. 2: 46. 1852. 
Pilea vliginosa Phil. Linnaea 30: 109. 1859 or 1860. 
Plant glabrous throughout, the stem radicant below, much-branched, the main 
branches ascending, bearing short axillary branchlets with small leaves; leaves 
rhombic or rhombic-ovate, 0.7 to 2.5 cm long, 0.4 to 2 cm wide, crenate-serrate 
nearly to base, obtuse or acutish at apex, acute at base, triplinerved (lateral nerves 
reaching scarcely to upper third), crenate-serrate, the cystoliths above linear, 
faint, few, beneath punctiform, numerous; plants monoecious (sometimes di- 
oecious?) , the cymes unisexual, slender-pedunculed, globose; staminate perianth 
with very short tips; achenes orbicular-reniform, about 1 mm long, 1,5 mm wide. 
Distribution: Central and southern Chile, at low elevations, the type collected 
by Charles Darwin in the Chonos Archipelago, 
Chile: Gay (B, Y); Nie (Ma); D'Urville (P); Dombcy (P). Rio Manso, Reiche 
in 1896 (B). Bureo, Claude Joseph 3994 (US). 
Atacama: Frcirina, Claude Joseph 18G2 (BM, US, Y). 
Concepci6n: Bridges (B). 
Valdivia: Valdivia, Bridges 741 (BM, V, Y)j Gay 235 (Gen, P); Philippi 28 
(B, P, US, V); Buchlien in 1897 (US), in 1899 (Gen, V), in 1905 (US). 
Panguipulli, Claude Joseph 2352 (US); Hollermeyer 511 (B); Werdermann 
1954 (B). Valenzuela Island, Lechler 409 (B, BM, Brux, P, V). Corral, 
Gunckel 68 (BM). 
Llanquihue: Puerto Montt, Philippi (type collection of P. uliginosa; B, 
BM, G). Peulla, Pennell 12653 (F, Ph, US, Y). 
Chiloe: Gay 68 (P); Cuming 40 (BM), Castro, Pennell 12608 (Y). 
Pilea uliginosa appears to be merely a depauperate form of P. elliptica. 
54. Pilea dauciodora (R. & P.) Wedd. Ann. Sci. Nat. III. Bot. 18: 223. 1852. 
Urtica dauciodora R. & P.; Wedd. Ann. Sci. Nat. III. Bot. 18: 223. 1852, as 
synonym. 
Pilea uncidens Wedd, Ann. Sci. Nat. III. Bot. 18: 224. 1852. 
Pilea dauciodora var. uncidens Wedd. in DC, Prodr. 161: 138. 1869. 
Stem repent, at length suberect, reddish or purplish; stipules triangular, up to 
1 mm long, soon deciduous; leaves broadly ovate, orbicular-ovate, or rarely 
ovate-lanceolate, averaging 1.5 cm long and 1 cm wide, obtuse or subacute at 
the apex, truncate, cordulate, or rarely subacute at the base, petiolate, crenate- 
serrate to base (teeth usually mucronulate, subimbricate), glabrous, dark green 
above, paler beneath, densely covered above with linear and fusiform cystoliths, 
those beneath fewer and fainter; plants monoecious or dioecious, the heads 
unisexual (both kinds often borne at same axil), rarely androgynous, slender- 
peduncled; staminate heads 2 to 6-flowered; pistillate inflorescence simple or de- 
compound, consisting of 2 to 6 (rarely 1) globose, 8 to 20-flowered clusters; achenes 
oblong-ovate, 1 to 1.2 mm long, strongly flattened. 
Distribution: Guatemala; Colombia and Venezuela to Peru and Bolivia, at 
2,000 to 3,200 meters altitude or rarely at lower elevations. Replaced in Ecuador 
by P. jamesoniana, a closely related species. 
Venezuela. 
Federal District: Caracas, Pittier 11120 (US). 
KILLIP—ANDEAN SPECIES OF PILEA 497 
Aragua; Colonia Tovar, Fendler 1246 (G, Gen, K, Mo); AUart 484 (US, Y). 
M£rxda: Mucurubd, Gekriger 329 (Gen, US). 
Colombia. 
Santander: Las Vegas, Killip & Smith 16093 (G, US, Y). La Baja, KiUip 
& Smith 18830 (G, US, Y). 
Norte de Santander: Rio Mesine, between Pamplona and Toledo, Killip 
& Smith 19847 (G, US, Y). Loso, Killip & Smith 20390 (G, US, Y), 
Tapatd, Killip & Smith 20207 (G, US, Y). P&ramo del Hatico, Killip 
& Smith 20669 (G, US, Y), 20693 (G, US, Y). 
Httila: Rio Balsillas, Rusby cfe PenneU 794 (F, G, Mo, US, Y). 
Cundinamarca: Bogota, Holton 262 (K, Ph, Y); Andrt 1243 (K, Y). Pdramo 
de Guasca, Cuatrecasas 2587 (US). 
Antioquia: Medellln, Archer 1083 (US), 1084 (US); Toro 969 (Y), 1049 (Y). 
Caldas: Cerro Tatami, PenneU 10379 (US). 
Peru: "Andes," Ruiz & Pav6n (Ma, P, type); Spruce (K). 
HuXnuco: Mufia, Macbride 4117 (F, US). 
JxtnIn: Huacapistana, KiUip & Smith 24160 (US), 24408 (US, Y). Acd- 
bamba, Raimondi 2800 (B). 
Ayacucho: Ccarrapa, Killip & Smith 22439 (F, US, Y). 
Puno: Sandla, Weberbauer 753 (B). 
Bolivia: Bang 1787 (Mo), 1796 (B, BM, F, Mo, Y). 
La Paz: Larecaja, Weddell 4561 (P, type of P. uncidem). Unduavi, Rusby 
1483 (BM, G, Ph, Y); Buchtien 372 (US), 2813 (Y), 8937 (US). Siru- 
paya, Buchtien in 1906 (B). Sorata, Mandon 1103 in part (BM, P, V), 
1124 (V). 
Cochabamba: Incachaca, Steinbach 8974 (B), 9153 (B, Ph). 
Santa Cruz: Santa Rosa, Kuntze in 1892 (K, Y). 
This is a common plant of fairly wide range. By far the greater part of the 
specimens examined, from Central America and West Indies as well as from South 
America, have broadly ovate leaves and minute stipules, agreeing closest with the 
form described as P. unddens. 
65. Pilea fendleri Killip, Field Mus. Bot. 13*: 341. 1937. 
Urtica dtchroa Poepp.; Wedd. in DC. Prodr. 16'; 61. 1869, as synonym. 
Pilea dauciodora var. crenata Wedd. in DC. Prodr. 16': 139. 1869. Not P. 
crenata Britton &. Wilson. 
Pilea dauciodora var. pilosvla Wedd, in DC. Prodr. 101: 139. 1869. 
Pilea leptophylla Killip, Contr. U. S. Nat. Herb. 28: 387. 1936. Not P. lepto~ 
phylla Urban, 1899. 
Slender herb, with the stem repent at base, at length ascending and few- to 
several-branched, the branches up to 8 cm high; stipules triangular-ovate, 1 to 2 
mm long, obtuse, subpersistent; leaves mainly rotund-spatulate (a few rhombic or 
suborbiculai), 0.5 to 2 cm long, 0.5 to 1 cm wide (those of a node subequal and 
generally similar), obtuse or rounded at apex, cuneate at base, crenate or crenate- 
serrate above middle (teeth 3 to 5 to a side), triplinerved, very thin and lax, 
glabrous or sparsely pilosulous with hyaline hairs, conspicuously marked on upper 
surface with linear or fusiform cystoliths up to 0,8 mm long, the lower surface with 
numerous conspicuous cystoliths in longitudinal rows on the nerves, those else where 
much fainter; plants monoecious, the heads unisexual or androgynous, borne in the 
axils of the upper leaves on slender peduncles 5 to 10 mm long; staminate flowers 
solitary, or 2 to 4, sessile in a few-branched cyme, or a few intermingled with the 
pistillate, the perianth about 2 mm wide when expanded, the lobes mucronulate; 
pistillate flowers sessile or subsessile, in small, usually densely-flowered cymes up 
to 5 mm wide, the perianth segments unequal, the middle segment about 0.5 mm 
long, the lateral half as long; achenes ovate, about 0.8 mm long. 
498 CONTRIBUTIONS FROM TIIE NATIONAL HERBARIUM 
Distribution: Venezuela, Colombia, and Peru, up to 1,000 meters altitude. 
Venezuela: Gollmer in 1854 (B). 
Ahagua: Colonia Tovar, Fendler 1247 (Bo, Brux, G, Gen, K, type, also type 
of P. dauciodora var. crenata, Ph, US); Moriiz 790 (B, type of P. daucio- 
dora var. pilosula, BM, Bo). 
Colombia. 
Maqdalena: Santa Marta Mountains, H. H, Smith 1223 (B, BM, Brux, F, 
G, Gen, P, Ph, US, Y). 
Peru: Poeppig 1383 (B), 
HuAnuco: Coehero, Poeppig 1552 in part (V). 
This plant is distinguished from P. dauciodora by its thinner leaves, which are 
of a more definitely spatulate outline, with far more conspicuous cystoliths and 
with usually a few hyaline hairs, and by its persistent stipules. 
In a list in the Prodromus of species excluded from Urtica Wcddell gives U. 
dickroa Peopp,, apparently only an herbarium name, as equaling Pilea nummulari- 
folia, and it is so cited in Index Kewensis. Weddell did not, however, include it 
in the formal synonymy of P. nummularifolio,, and the specimen in the Vienna 
herbarium bearing Poeppig's name is surely not that species. This specimen, as 
well as the one in the Berlin herbarium, agrees well with material of P. fendleri 
from northern South America, although this extension of range is rather remark- 
able. 
Unfortunately the name crenata was not available in raising the variety to 
specific rank, and I was disinclined to use the varietal name pilosula, as that plant 
may prove to be specifically distinct. The confusion already existing would 
become worse, were Poeppig's manuscript name transferred to Pilea. 
66. Pilea jamesoniana Wedd. Ann. Sci. Nat. III. Bot. 18 r 224. 1852, 
Pilea dauciodora var. jamesoniana Wedd. in DC. Prodr. 161: 139. 1869. 
Plant glabrous throughout; stem up to 25 cm long; stipules ovate, 4 to 5 mm 
long, persistent; leaves orbicular-ovate, 1 to 3.5 cm long, 1 to 2.5 cm wide, sub- 
acute at apex, truncate at base, crenate; plants monoecious, the cymes androgy- 
nous, the peduncles slender, 2 to 2.5 cm long; achenes ovate-oblong, 1.5 to 1.7 
mm long. 
Distribution: Mountains of Ecuador, at about 3,000 meters altitude. 
Ecuador. "Andes, 3,000 meters," Jameson 745 (BM, Gen, K, type). "In 
Andibus," Spruce 6047 (K), Sodiro 153/23 (B). 
Pi CHINCH A: Sodiro 153/23b (B). La Magdalena, Firmin 640 (F, US). 
Tunquraiiua: Spruce 6106 in part (V). 
Pilea jamesoniana and P.filipes are distinguished from the common P. dauciodora 
by large persistent stipules. The leaves of both are usually larger and more 
pointed. 
57. Pilea filipes Rushy, Bull. Torrey Club 28: 311. 1001. 
Plant glabrous throughout, the stem ascending, 20 to 40 cm high; stipules 
oblong, 5 to 7 mm long, persistent; leaves ovate-elliptic, 2 to 6 cm long, 1.5 to 3 
cm wide, acute or acuminate at apex, acute or rounded at base, crenate-serrate; 
plants monoecious, the peduncles filiform, 4 to 6 cm long, the inflorescences 
unisexual, or rarely one or two staminate flowers at base of pistillate, in globose 
clusters forming a panicle; achenes less than 1 mm long. 
Distribution: Western Bolivia, at 1,800 to 2,600 meters altitude. 
Bolivia. 
La Paz: Bang 1788 (B, BM, G, Ph, US, V, Y). Yungas, 1,800 meters, Rusby 
1756 (Y, type). Unduavi, Rusby 1479 (Y). Sorata, Mandon 1103 in 
part (Gen, P). 
KILLIP—ANDEAN SPECIES OF PILEA 499 
IX. Capitellatae 
58. Pilea discolor Killip, Contr. U. S. Nat. Herb. 20: 387. 1936. 
DISTRIBUTION: Known positively only from the Eastern Cordillera of Colombia. 
Colombia: Lekmann BT1258 (K, type as to staminate inflorescence, Y). 
Cundinamarca: Chinquuxquirfi, alt. 2,500 meters, Ariste Joseph A890 
(Bog, US, type). 
59. Pilea minutiflora Krause, Bot. Jahrb. Engler 37: 529. 1906. 
Plant glabrous throughout; stem erect, 30 to 40 cm high, few-branched; leaves 
ovate-lanceolate or ovate-elliptic, 3 to 8 cm long, 1.5 to 3 cm wide, acuminate at 
apex, rounded or cordulate at base, crenate-serrate to base, 3-nerved, the lateral 
nerves reaching only to upper third of blade; cystoliths few and very faint, linear; 
plants usually dioecious; staminate flowers in globose, few-flowered clusters about 
4 mm in diameter, in a once-branched panicle, the perianth globose in bud, 2 mm 
in diameter, purplish distally, pale proximally, the lobes obtuse; pistillate flowers 
in small, subcontiguous clusters in subdichotomous cymes up to 7 cm long in- 
cluding a slender peduncle, the perianth scarcely 1 mm long; achenes about 
1 mm long. 
Distribution: Central and southern Peru, at 1,900 to 3,000 meters altitude. 
PERU. 
JunIn: Huacapistana, 1,900 to 2,000 meters, Weberbauer 2027 (B, type). 
Puno: Sand fa, Weberbauer 575 (B). 
The Indians are said to use this as a remedy for unrequited love. 
60. Pilea capitellata Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 220. 1856-57. 
Erect herb, 40 to 60 cm high, glabrous throughout, the internodes elongate; 
stipules cordate-ovate, subpersistent; leaves oblong, 8 to 15 cm long, 2 to 4 cm 
wide, acuminate at apex, acute or obtuse at base, serrate except at base, the cysto- 
liths punctiform, obscure, more numerous beneath; plants dioecious; staminate 
heads globose, 5 to 8 mm in diameter, densely flowered, solitary, the peduncles 
filiform, 1 to 2 cm long. 
Distribution: Known only from the type locality, in western Bolivia. 
Bolivia. 
La Paz: Tipuani, Weddell (P, type). 
The type specimen is in poor condition, all of the leaves having become detached 
from the stem. Weddell evidently did not consider that the leaves of a node 
were dissimilar or greatly unequal. Were it possible to show that they were, 
there would be little to distinguish this species from P. cymbifolia, as the single- 
headed, globose staminate inflorescence and the large persistent stipules are 
common to the two. The foliage is very similar, although in P. cymbifolia the 
leaves are somewhat falcate. 
61. Pilea cuprea Krause, Bot. Jahrb. Engler 37: 530. 1906. 
Pilea ornatifolia Killip, Joum. Washington Acad. Sci. 13: 356. 1923. 
Plant about 60 cm high, glabrous throughout; stem succulent, geniculate at 
middle of internodes; leaves ovate-lanceolate, acuminate at apex, serrate to base, 
cordulate, those of a pair similar but somewhat unequal, the larger 3.5 to 5.5 cm 
long, 1.5 to 2.5 cm wide, with petioles up to 1.5 cm long, the smaller 2.5 to 3.5 cm 
long, 1 to 1.5 cm wide, with petioles up to 3 mm; cystoliths on upper surface 
punctiform, on lower surface linear and fusiform, conspicuous; plants dioecious; 
staminate cluster solitary on slender peduncles or in a few-branched panicle, 
globose, about 6 mm in diameter; pistillate heads 4 to 8-flowered, sessile or short - 
peduncled. 
Distribution: Known only from the northern part of the Western Cordillera 
of Colombia and the southern part of the Central Cordillera. 
500 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Colombia. 
Antioquia: Triana (HNC). 
Caldas: Cerro Tatam£, alt. 3,200 to 3,400 meters, Pennell 10476 (A, G, US, 
type of P. ornatifolia, Y). 
El Cattca: Central Cordillera, near Popayfin, alt. 2,200 to 2,700 meters, 
Lehmann 4475 (B, type, K, US). 
63. Pilea tungurahuae Killip, Contr. U. S. Nat. Herb. 26: 387. 1936. 
Distribution: Known only from the type locality, in the mountains of central 
Ecuador. 
Ecuador. 
Tunourahua: Eastern slope of Volcdn Tungurahua, alt. 2,000 meters, 
Tate 585 (US, type). 
63. Pilea rhombifolia Killip, Journ. Washington Acad. Sci. 13; 357. 1923. 
Plant 20 to 30 cm high, glabrous throughout; leaves rhombic-ovate, 2 to 4.5 
cm long, 1.5 to 3 cm wide, cuneate or subrotund at base, crenate-serrate, sub- 
coriaceous, dark green above, silvery white beneath, the cystoliths linear, con- 
spicuous above; pistillate flowers in subsessile cymes up to 1 cm wide; achenes 
ovate, 1 mm long. 
DISTRIBUTION: Known only from the type locality, in northeastern Colombia. 
Colombia. 
Maodalena: Santa Marta, H. H. Smith 1446 (B, BM, F, G, Gen, K, Mo, 
Ph, US, type, Y). 
64. Pilea peimellii Killip, Journ. Washington Acad. Sci. 18: 357. 1923. 
Plant herbaceous, about 30 cm high, branched near base, glabrous throughout, 
drying light green; leaves narrowly ovate-oblong, 2 to 4 cm long, 0.8 to 1.5 cm 
wide, acuminate at apex, tapering to base, minutely serrulate, above copiously 
covered with punctiform and minute linear cystoliths, beneath punctate with 
dark ocellae but nearly destitute of cystoliths; plants monoecious; staminate 
heads solitary, the peduncles filiform, about 3 cm long; pistillate cymes subsessile; 
achenes barely 0.5 mm long. 
Distribution: Known only from the type locality, in the northern part of the 
Western Cordillera of Colombia. 
Colombia, 
Caldas: Cerro TatamA, alt, 2,400 meters, Pennell 10326 (US, type). 
65. Pilea macbridei Killip, Journ. Washington Acad. Sci. 15: 52. 1925. 
Plant about 1 meter high, glabrous throughout, the stem woody, much branched 
above; leaves ovate or orbicular-ovate, 3 to 5 cm long, 1.5 to 2.5 cm wide, acumi- 
nate at apex, cordulate or subobtuse at base, serrate from base to apex; plants 
monoecious; staminate flowers in compact globose heads up to 6 mm wide, borne 
in the upper axils; pistillate flowers in small subsessile cymes in the lower axils; 
achenes punctulate. 
Distribution: Central Peru, at 2,800 to 3,000 meters altitude. 
Peru. 
HuAnuco: Rio Chinchao, alt. 2,800 meters, Macbride 5179,(P, type, US). 
JunIn : Carpapata, above Huacapistana, Killip & Smith 24457 (US, Y). 
66. Pilea elegans Gay, Fl. Chil. 5: 364. 1849. 
Pilea elliptica var. gayana Wedd. in DC. Prodr. 16': 140. 1869. 
Plant glabrous throughout; stem erect or ascending, 30 cm or more long, stout; 
leaves oblong-lanceolate or elliptic-lanceolate, 5 to 10 cm long, 2 to 3 cm wide, 
acuminate at apex, acute at base, crenate-serrate, 3-nerved, the nerves extending 
to apex of blade; cystoliths obscure, linear or fusiform above, punctiform beneath; 
plants monoecious; staminate flowers in a subglobose slender-peduncled head or in 
KILLIP—ANDEAN SPECIES OF PILEA 501 
glomerules forming a once-branched panicle; pistillate Sowers in short-peduncled 
cymes; achenes broadly ovate, about 0.7 mm long. 
Distribution: Central Chile. 
Chile : Coronel, Ochsenius in 1862 (B). 
Arauco: Cafiete, Claude Joseph 5607 (US). La Mocha, Philip-pi (B); 
Heed in 1872 (BM). 
CATJTfN: Temuco, Claude Joseph 4658 (US). 
Valdivia: Valdivia, Gay 236 (B, P, type, V); Bridges 742 (BM); Buchtien 
in 1902 (US). 
Weddell reduced P. elegant Gay to a variety of P. dliptica and used the specific 
name elegam for a wholly distinct West Indian species. Pilea elegans Gay is 
quite different from P, elliptiea. 
Local name: "Mellahuvilu." 
X. Multiflobae 
07. Pilea pteropodon Wedd. in DC. Prodr. 16': 144. 1869. 
Robust herb, glabrous throughout, the stem quadrangular, repent at the base, 
erect, unbranched, up to 25 cm high; stipules oblong or linear-oblong, 1.5 to 3 cm 
long, 3 to 8 mm wide, obtuse, persistent; leaves broadly ovate, ovate-oblong, ellip- 
tic, or rarely suborbicular, 12 to 25 cm long, 6 to 15 cm wide, abruptly acuminate 
or attenuate-acuminate, abruptly or subabruptly narrowed to a broadly winged 
petiole up to 10 cm long, triplinerved, crenate-serrate toward apex or eubentire, 
the cystoliths filiform and punctiform, obscure on the under surface; plants dioe- 
cious; pistillate cymes dichotomous, up to 10 cm long including the peduncle and 
branches; achenes suborbicular, about 1 mm in diameter, apiculate. 
Distribution: Southwestern Colombia and northwestern Ecuador; subtropical 
zone, up to 1,500 meters altitude. 
Colombia. 
El Cauca: La Gallera, Pacific slope, west of Popaydn, Killip 7703 (G, US, 
Y). El Tambo, Sneidern 707 (S), 788 (S), 862 (S), 863 (S). 
NariAo: Tuquerres, Triana (HNC, P, type), 892 (part of type?, B, BM, 
K, P). Armada, AtidrS 3510 (K). 
Ecuador. 
Esmeraldas: Playa Rica, Parroquia de Concepcidn, Mezla 8476 (US). 
This species is readily recognized by the large, persistent stipules and the winged 
petioles. The shape of the blade, though fairly uniform in an individual plant, 
varies greatly in the different specimens cited above, ranging from elliptic (5:2) 
in the type to suborbicular (about 15 cm long and broad) in the Ecuador specimen. 
Local name: "Guaina." 
08. Pilea caxmtlosa Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 208. 1856-57. 
Plant glabrous throughout, about 50 cm high, suberect or subscandent, the stem 
diffusely branched, drying straw-colored; stipules suborbicular, persistent; leaves 
narrowly lanceolate, 0.8 to 4 cm long, 0.5 to 1.5 cm wide, caudate-acuminate at 
apex, coarsely serrate, carnose; cystoliths of upper surface mainly punctif orm, a 
few linear ones in longitudinal rows near margin and between nerves; plants dioe- 
cious; staminate flowers in small sessile glomerules in short-peduncled cymes; 
pistillate flowers in sessile, few-flowered cymes. 
Distribution: Eastern and Central Cordilleras of Colombia, at about 3,000 
meters altitude. 
Colombia. 
Santander: La Baja, Killip & Smith 18808 (G, US, V). 
Cundinamabca: ViotA, Andrl K1679 (K). 
r 
502 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Tolima: La Ceja, Old Quindlo Trail, Andrt K2215 (K, Y). 
Antioquia: Triana 345 (P, type). 
Caldas: Magana, Old Quindfo Trail, Killip & Ilazen 9438 (G, Ph, US, Y). 
The texture of the stem and the persistent stipules suggest a relationship be- 
tween this species and P. flexuosa, though there are several differences other than 
the dimorphic leaves of P. fiexuosa, 
69. Pile a smithii Killip, Contr. U. S, Nat. Herb. 26: 388. 1936. Plate 36. 
Distribution: Eastern Cordillera of Colombia, at 2,200 to 3,200 meters alti- 
tude; known only from the general vicinity of Bucaramanga. 
Colombia. 
Santander: La Baja, Killip & Smith 17188 (G, US, Y), 18284 (G, US, 
type, Y), 18797 (G, S, US, Y). California, Killip & Smith 16990 
(G, US). 
Two other specimens from the Department of Santander (Killip & Smith 16561 
and 19021), both sterile, belong to an un described species of this relationship. 
Explanation of Plate 36.—Pilea tmithli, the type specimen. One-half natural siae. 
70. Pilea marginata (Poepp.) Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 238, 
1856-57. 
Urtica marginata Poepp.; Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 238. 1856-57, 
as synonym. 
Erect herb, 80 cm high or more, glabrous throughout; petioles 1 to 6 cm long; 
leaves oblong or oblanceolate, 10 to 20 cm long, 4 to 8 cm wide (lower slightly 
smaller), attenuate-acuminate, acute or subobtuse at base, undulate, sometimes 
minutely denticulate toward apex, coriaceous, the margin thickened, the cysto- 
liths stellate, 3-rayed; plants apparently dioecious; staminate flowers in small 
eubcontiguous glomcrules in a narrow panicle, the perianth lobes subobtuse. 
Distribution: Northern and central Peru. 
Peru: Rfo Amazonas, Poeppig D1088 (P, type, V), 2088 (BM). 
San MartIn: Tarapoto, Ule 6508 (Go). 
HuAnuco: Cochcro, Poeppig 3045 (B, Gen, P, V). Pampayacu, alt. 1,100 
meters, Macbride 5086 (F, K, US), 
JuNfN: San Nicolas, Picliis Trail, alt. 1,100 meters, Killip & Smith 26032 
(F, US, Y). 
This, the next following species, and P. crugeriana are characterized by stellate 
3-rayed cystoliths on both surfaces of the leaves, 
71. Pilea triradiata Killip, Contr. U. S. Nat. Herb. 26: 389. 1936. Plate 37. 
Distribution: Known only from the type specimen. 
Venezuela. 
Federal District: Caracas, Gollmer in 1856 (B, type). 
Explanation ov Plate 37—Pilea triradiata, the type specimen. One-half natural size. 
73. Pilea rusbyi (Britten) Killip, Journ. Washington Acad. Sci. 16: 293. 1925. 
Urera rusbyi Britton, Bull. Torrey Club 28; 310. 1901. 
Erect or ascending herb, 30 cm or more high, glabrous throughout; leaves 
broadly ovate, suboblique, 10 to 20 cm long, 4.5 to 9 cm wide, abruptly caudate- 
acuminate at apex, subcuneate at base, finely serrate (serrations 5 per cm), the 
nervation beneath very dark, the petioles up to 6 cm long, those of a pair unequal; 
cystoliths punctiform and obscure above, almost wanting beneath; plants dioe- 
cious, the inflorescences cymose-paniculate, up to 20 cm wide, on peduncles 4 to 
8 cm long; achenes 8 to 10 mm long. 
KILLIP—ANDEAN SPECIES OF PILEA 503 
Distribution: Northwestern Bolivia, at 1,000 to 1,800 meters altitude. 
Bolivia. 
La Paz: Yungas, alt. 1,800 meters, Rushy 1774 (F, Y, type). Coroico, 
Buchtien 3754 (US, Y). 
73. Filea puracensis Killip, Journ. Washington Acad. Sci. 13: 356. 1023. 
Erect herb, 30 to 40 cm high, glabrous throughout; leaves elliptic or elliptic- 
lanceolate, 10 to 15 cm long, 3 to 6,5 cm wide, rounded or subauriculate at base, 
closely crenate-serrulate, the petioles unequal, 2.5 to 5 cm long; cystoliths puncti- 
form and linear on both surfaces, faint; plants monoecious, the staminate inflores- 
cence borne in the upper axils, the pistillate in the lower; staminate inflorescence 
subdichotomous, 3 to 6 cm long; pistillate inflorescence of paniculately branched, 
sessile cymes; achenes about 1 mm long, oblique. 
DISTRIBUTION: Southern parts of the Central and Western Cordilleras of 
Colombia. 
Colombia. 
El Cauca: Mount Purac6, alt. 3,200 meters, Central Cordillera, Killip 
6673 (G, K, Ph, US, type, Y). El Tambo, alt. 2,800 meters, Western 
Cordillera, Sneidern 1210 (S). 
74. Pile a antioquiensis Killip, Contr. U. S. Nat. Herb. 26:389. 1936. Plate 38* 
Distribution: Known only from the type locality, in northwestern Colombia. 
Colombia. 
Antioquia: Angelopolis, Toro 885 (Y, type). 
Explanation or PLATE 38.—Pilea anlloguientis, the type specimen. One-half natural site. 
76. Pilea buchtienii Killip, Journ. Washington Acad. Sci. 15: 297. 1925. 
Succulent herb, glabrous throughout, the stem at first repent, at length erect, 
simple, about 20 cm high; leaves broadly ovate, borne near end of stem, 8 to 12 
cm long, 3 to 6 cm wide, acute or caudate-acuminate at apex, tapering to a petiole 
1 to 2.5 cm long, doubly crenate-serrate, carnose, the cystoliths of upper surface 
punctiform and fusiform, wanting beneath; plants monoecious, the staminate and 
pistillate flowers borne in separate few-branched panicles often at same node, the 
peduncles of both subcqual, 1.5 to 2 cm long; achcnes 1.5 mm long, strongly 
flattened. 
Distribution: Known only from the type locality, in central Bolivia. 
Bolivia. 
Cochabamba; Antahuacana, Espfritu Santo, alt. 750 meters, Buchtien 4526 
(US, type). 
76. Pilea verrucosa KiUip, Journ. Washington Acad. Sci. 15: 53. 1925. 
Shrub, about 1 meter high, glabrous throughout, the stem few-branched, strong- 
ly verrucose-roughened; leaves ovate or subrhombic, 2 to 3.5 cm long, 1 to 2.5 cm 
wide, acute at apex, rounded or cordulate at base, crenate-serrate, entire at base, 
the petioles 3 to 8 mm long, the cystoliths punctiform; plants monoecious, the 
inflorescences unisexual; staminate flowers in much-branched, densely flowered 
panicles 2.5 to 4 cm long, in the upper axils, the perianth barely 0.5 mm long; 
pistillate flowers in subsessile cymes in the lower axils. 
Distribution: Known only from the type locality, in central Peru. 
Peru. 
HuAnuco: Rio Chinchao, alt. 2,800 meters, Macbride 5201 (B, F, type, K, 
US). 
77. Pilea apiculata Killip, Contr. U. S. Nat. Herb. 26: 390. 1936. 
Distribution: Known only from northeastern Colombia. 
504 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Colombia. 
Magdalen a: Rio Piedras, near Santa Marta, H. H. Smith 1403 (distributed 
as P. riparia; B, BM, Brux, F, G, Gen, K, Mo, Ph, US, type, Y). 
Another specimen of this species at the New York Botanical Garden bearing 
this same number was collected at " Cacagualito, 1,000 to 3,000 ft." 
78. Filea subamplexicaulis Killip, Contr. U. S. Nat. Herb. 26: 390. 1936. 
Distribution: Known only from northern Peru, at 1,100 to 1,400 meters 
altitude. 
PERtJ. 
San MartIn: Cerro de Escaler, near Tarapoto, Ule 6588 (B, Gen, Go, type, 
K). San Roque, L. Williams 7425 (US). 
79. Filea punctata (H. B. K.) Wedd. Ann. ScL Nat. III. Bot. 18: 222. 1852. 
Urtica punctata H. B. K. Nov. Gen. & Sp. 2: 38. 1817. 
Plant 20 to 40 cm high, glabrous throughout, the stem erect or ascending, 
strongly sulcate when dry; leaves ovate or ovate-elliptic, 3 to 8 cm long, 1.5 to 
3 cm wide, caudate-acuminate, cuneate at base, coarsely crcnate-serrate, tripli- 
nerved well above the base (lateral nerves extending barely to upper third of 
blade), slender-petioled, black-punctate beneath, the cyatoliths fusiform, con- 
spicuous above, very faint beneath; plants monoecious or dioecious, the clusters 
androgynous or unisexual, the staininate flowers short-pediceled, the lobes ovate, 
concave. 
Distribution: Northern Peru, at 1,300 to 1,600 meters altitude. 
Peru: Ruiz <Sc Pavdn (Gen). 
Cajamahca: Zaulaca, u Province of Jaen de Bra cameras," Humboldt & Bon- 
pland (P, type). 
Ahazonas: Ghachapoyas, Weberbauer 4307 (B, Gen), 
80. Filea attenuata Killip, Contr. U. S. Nat. Herb. 26: 391. 1936. Plate 39. 
Distribution: Known only from the type locality and its general vicinity. 
Ecuador. 
Pichincha: Pilat6n, Sodiro 153/24 (B, type). San Nicolfis, alt. 900 meters, 
Sodiro 153/29 (B). 
Explanation or Plats 39 —Pflta attenuata, the type specimen. About one-half natural size. 
81. Filea nmtieiana (Spreng.) Wedd. Ann. Sci. Nat. III. Bot. 18: 218. 1852. 
Urtica melastomoides H. B. K. Nov. Gen. & Sp. 2: 38. 1817. Not U. melasto- 
moides Poir. 1816, or Pilea melastomoides Wedd. 1854. 
Urtica mutisiana Spreng. Syst. Vcg. 3: 840. 1826. 
Pilea subserrata Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 207. 1856-57. 
Pilea multiflora Wedd. in DC. Prodr. 161: 145. 1869, in part. Not Urtica 
multiflora Poir. 1816. 
Coarse, erect, somewhat shrubby herb, simple or few-branched, up to 1 meter 
high, glabrous throughout; stipules less than 1 mm long, soon deciduous; petioles 
5 to 15 mm (extremes up to 40 mm) long; leaves ovate, oblong, or elliptic, 5 to 12 
cm long, 2 to 5 cm wide, acuminate or caudate-acuminate at apex, rounded or 
subacute at base, obscurely or prominently serrate above middle, the cyatoliths 
linear, prominent and elevated above, obscure beneath, usually absent on the 
veins; plants monoecious or dioecious, the cymes unisexual; staminate inflorescence 
cymose-paniculate, up to 15 cm long, several times dichotomous, the flowers short- 
pediceled; pistillate flowers in sessile or subsessile cymes, shorter than the adjacent 
petiole; achenes orbicular-ovoid, about 1.5 mm long and 0.5 mm thick. 
Distribution: Eastern and Central Cordilleras of Colombia, at 2,000 to 
3,200 meters altitude. 
KTT.TJP—ANDEAN SPECIES OF PILEA 505 
COLOMBIA, 
Cundinamakca: Mutis 1929 (B, type, Ma, US). 
Tolima: Quindfo, Triana 344 (HNC, P, type of P. subserrata); Linden 1206 
(Brux); Goudot (P, V). Murillo, Pennell 3164 (US, Y), 3167 (G, US, Y). 
La Lora, Quindfo Trail, KiUip 9772 (G, US); Andri 879 (K, P). San 
Juan, Andri 2082 (K), Aguadita, Andri K1487 (K, P). La Suiza, 
Cuatrecasas 2589 (US). 
Antioquia: Jervise (K). 
Caldas: Along Old Quindfo Trail, Killip & Hazen 9475 (US), 9482 (G, Ph, 
US, Y), 11891 (G, Ph, US, Y). Salento, Pennell 8869 (G, US), 9299 
<G, Ph, US, Y). 
Weddell considered the Colombian plant (Urtica melastomoides H. B. K.) 
and the Peruvian one {{/. multiflora Poir.) conspecific, using the specific name 
Pilea mutiaiana in his first monograph and P. multiflora in the Prodromus. Pilea 
multiflora is clearly distinct from the Colombian plant, the points of difference 
being discussed in connection with that species. 
The earliest specific name for the Colombian plant, melastomoides, is invalidated 
by its use for a species of Pilea from Java. Sprengel, perhaps aware of the earlier 
Urtica melastomoides of Poiret, substituted the name Urtica mutisiana for 17. 
melastomoides H. B. IC, and clearly Pilea mutisiana (Spreng.) Wedd. becomes the 
name for this species. 
Pilea subserrata was based upon Triana 344 in the Paris herbarium. There are 
two sheets of this there. Both bear the name Pilea mutisiana in WeddelTs hand- 
writing, but neither is annotated P. subserrata. They represent typical P. 
mutisiana. 
Pilea mutisiana grows in abundance along the Quindfo Trail, some of the plants 
being almost true shrubs a meter high or more. 
82. Pilea myriantha Killip, Contr. U. S. Nat. Herb. 20: 391. 1936. 
Urtica floribunda H, B, K, Nov. Gen, & Sp. 2: 38. 1817. Not Pilea floribunda 
Baker, 1897. 
Pilea mutisiana Wedd. Ann. Sci. Nat. III. Bot. 18: 218. 1852, in part. 
Pilea multiflora Wedd. in DC. Prodr. 18 145. 1869, in part. 
Erect sufifrutescent herb, 50 to 60 cm high, glabrous throughout; stipules tri- 
angular, about 3 mm long, soon deciduous; petioles 3.5 to 4 cm long; leaves oblong 
or oblong-lanceolate, 7 to 12 cm long, 3 to 4.5 cm. wide, acuminate at apex, rounded 
at base, finely serrulate nearly to base, the cystoliths linear, conspicuous beneath; 
plants dioecious; staminate inflorescence paniculate, long-peduncled, much ex- 
ceeding the petioles, profusely branched, the branches alternate, the flowers sessile 
in many-flowered clusters, the perianth broadly obovoid in bud, up to 1.2 mm in 
diameter. 
Distribution: Southwestern Colombia and northern Ecuador, at 2,000 to 
2,500 meters altitude. 
Colombia. 
El Caxtca: Palac6, Humboldt & Bonpland (P, type). Coconuco, Killip 6832 
(US, Y). 
Ecuador. 
CABCHf: Near Pun, Mexla 7592 (US). 
Pi chinch a: Mount Pichincha, Sodiro 153/27c (B). 
This species, described as Urtica floribunda H. B. K., was merged with P. mutui- 
ana by Weddell (P. multiflora in his last monographic treatment). The dis- 
tinguishing characters noted by the original authors, i. e. longer petioles, a panicle 
with alternate, not dichotomous, branches, and smaller sessile flowers, hold good 
in the recently collected material, and seem of sufficient importance to justify 
506 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
regarding the two species as distinct. Id addition, the leaves are toothed nearly 
to the base in P. myrianlka. 
83, Pilea goudotiana Wedd. Ann. Sci. Nat. III. Bot. 18: 216. 1852. 
Succulent herb, glabrous throughout, the stem repent, the branches erect, up to 
1,5 meters high; stipules oblong-lanceolate, 1.5 to 2 mm long, soon deciduous; 
leaves oblong or ovate-oblong, 5 to 9 cm long, 2 to 4.5 cm wide, abruptly acumi- 
nate at apex, rounded or cordulate at base, serrate except near base, thick, the 
upper surface papillose with very numerous punctiform cystoliths (hence scabrid) 
and bearing numerous linear and fusiform cystoliths, the lower surface with more 
obscure punctiform cystoliths; plants dioecious; staminate inflorescences paniculi- 
forzn, borne in the upper axils, longer than the adjacent petioles; pistillate inflor- 
escence cymose, the cymes shorter than the adjacent petioles, compact; achenes 
about I mm long. 
DISTRIBUTION: Eastern Cordillera of Colombia, at 2,300 to 3,000 meters 
altitude. 
Colombia: Humboldt & Bonpland (B). 
Santander: Las Vegas, Killip & Smith 16097 (G, US, Y). Mount San 
Vicente, Killip & Smith 18964 (G, US, Y). Mount San Martfn, Killip 
& Smiih 19138 (G, US, Y), 19164 (G, US, Y), 19201 (G, US, Y). Mount 
Pefia Blanca, Killip & Smith 19270 (G, US, Y). 
Cundinamauca: Bogota (cultivated), Goudot (K, P, type). Fusagasug£, 
Andrt K1682 (K). Tequendama Falls, Troll 3738 (B). 
This species is easily confused with P. mutisiana, the principal points of differ- 
ence being the larger stipules of P. goudotiana, the cystolithic marking, which 
results in a noticeable roughness to the upper surface of the leaves, the extension 
of the serrations nearly to the base of the leaves, and the smaller achenes. 
84. Pilea losexisis Killip, Contr. U. S. Nat. Herb. 20: 391. 1936. 
Distribution: North-central Venezuela and northeastern part of the Eastern 
Cordillera of Colombia, 
Venezuela. 
Ahagua: Rancho Grande, alt. 1,200 to 1,500 meters, Pitiier 13984 (US). 
Colombia. 
Norte de Santander: Loso, north of Toledo, alt. 2,400 meters, Killip & 
Smith 20370 (G, US, type, Y), Between Pamplona and Toledo, Killip & 
Smith 19969 (G, US, Y). 
80. Pilea suffruticosa Krause, Bot. Juhrb. Engler 37: 529. 1906. 
Plant erect, suffruticose, about 2 meters high, glabrous throughout, the stem 
simple, terete below, quadrangular above; leaves narrowly elliptic to ovate-elliptic, 
5 to 8 cm long, 2 to 3 cm wide, acute at apex, subcuneate at base, serrulate, tri- 
nerved (lateral nerves reaching only to upper quarter of blade), epunctate beneath, 
thick-carnose, the cystoliths all fusiform, more than 0.5 mm long, borne mainly 
between the nerves on upper surface, obscure beneath; plants apparently dioeci- 
ous; staminate inflorescences cymose-paniculate, much longer than the adjacent 
petiole, the perianth globose in bud, about 2 mm in diameter, the lobes linear, 
obtuse. 
Distribution: Known only from the type locality, in northern Peru. 
Peru. 
Amazon as: Chachapoyas, alt. 2,500 meters, Weberbauer 4387 (B, type). 
80. Pilea citriodora Wedd. Ann. Sci. Nat. III. Bot. 18 : 216. 1852. 
Urtiea Umoniodora Pav6n; Wedd. Ann. Sci. Nat. III. Bot. 18 : 216. 1852, as 
synonym. 
KILLIP—AKDEAN SPECIES OF PILEA 507 
PUea tarmemis Killip, Journ. Washington A cad. Sci. 15: 51. 1925. 
Erect herb, up to 60 cm high, glabrous throughout; stem simple; leaves ovate- 
lanceolate, 6 to 14 cm long, 2.5 to 6 cm wide, obtuse or short-acuminate at apex, 
cordulate, crenate-serrate from apex to base, bearing on both surfaces yellowish 
fusiform, linear, and punctiform cystoliths, the petioles up to 2 cm long, the lateral 
nerves extending to apex of blade; staminate flowers in dense clusters in diffuse 
long-peduncled panicles; pistillate inflorescence similar to the staminate, the seg- 
ments unequal; achenes about 0.5 mm long. 
Distribution: Central Peru, at 1,700 to 2,400 meters altitude. 
Peru: Ruiz & Pavdn (B, Bo, P, type). 
HuAnuco: Casapf, Poeppig 1260 (V). 
JunIn: Huacapistana, Province of Tarma, Macbride 5822 (F, type of P, 
tarmensis, US); Weberbauer 1776a (B). Chanchamayo, Raimondi 2398 (B). 
87. Filea poeppigiana Wedd. Ann. Sci. Nat. III. Bot. 18:225. 1852. 
Plant herbaceous, glabrous throughout; stem repent, at length erect, 30 to 50 
cm high, unbranched; stipules broadly ovate, 1 to 2 mm long, subpersistent; 
leaves ovate-lanceolate or oblong-lanceolate, rarely oblanceol&te, 3.5 to 10 cm 
long, 2 to 5 cm wide (extremes to 15 cm long and 7 cm wide), acuminate, cuneate at 
base, serrulate or crenate-serrate nearly to base, triplinerved, the petioles up to 7 
cm long, the cystoliths fusiform or filiform, with a few punctform ones inter- 
mingled; plants dioecious; pistillate inflorescences cymose-paniculate, borne in 
the upper axils, the peduncles slender, up to 4.5 cm long, longer than the adjacent 
petioles; achenes ovate-oblong, about 0.8 mm long. 
Distribution: Eastern slopes of the northern part of the Peruvian Andes, up to 
2,000 meters altitude. 
Pfrtj. 
San MartIn: Tarapoto, Ule 6844 (B, Gen, Go). 
Hu4ntjco: Cochero, Poeppig 1032 in part (V), 1539B (P,* type, V), Yanano, 
Macbride 3770 (F, US). 
JunIn: Dos de Mayo, Pichis Trail, Killip Smith 25826 (F, UP, Y). 
Porvenir, Killip & Smith 25902 (US, Y). 
In the key (p. 375) and in the Flora of Peru I differentiated this species from 
P. muUiflora on the basis of its larger stipules, having considered King's 1672, 
from southeastern Colombia, as belonging to P. poeppigiatia. I have since had an 
opportunity of examining more carefully the type of P. poeppigiana, and find 
that the stipules, though subpersistent, actually are only 1 to 2 mm long. This, 
together with other differences, has led me to describe the Klug plant as new. 
This revised interpretation of P. poeppigiana, together with other changes, 
makes necessary the following alteration to the latter part of the key to the species 
of Capitellatae (p. 375): 
Achenes very small, less than 1 mm long (Peru). 
Leaves obtuse or short-acuminate at apex, cordulate at base__86. P. citriodora. 
Leaves long-acuminate at apex, cuneate at base ..87. P. poeppigiana. 
Achenes larger, 1 to 1.5 mm long. 
Stipules lanceolate, 8 to 10 mm long, persistent (Colombia) 87a. P. umbriana. 
Stipules triangular, not more than 1 mm long, soon deciduous. 
Leaves oblong-lanceolate to ovate-lanceolate, the petioles (at least the longer 
at a node) more than 1 cm long, the teeth subequal (Peru and Bolivia). 
88. P. multiflora. 
Leaves narrowly lanceolate, sessile or subsessile, the teeth larger toward 
apex (Bolivia)   __89.P. picta. 
• The type is unnumbered and is labeled merely "Peruvia subandina." How- 
ever, it is clearly a part of no. 1539B. 
508 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
87a. Pilea umbriana Killip, Bp. nov. 
Herba dioica, glaberrima; stipulac magnae, lanceolatae, pereistentes; folia jugi 
similia et subaequalia, rhombeo-lanceolata vel obtanceolata, acuminata, petiolata, 
serrata, cystolithis filiformibus, supra ad marginem fusiformibus, subtus paucis; 
cymae 9 pedunculatae, pauciramosae, floribue pedicellatis. 
Plant herbaceous, glabrous throughout; stem repent at base, at length erect, 
about 15 cm high, unbranched; stipules lanceolate, 8 to 10 mm long, 3 to 4 mm wide, 
obtuse, persistent; leaves of a pair similar and subequal, rhombic-lanceolate or 
slightly oblanceolate, 8 to 12 cm long, 2.5 to 4 cm wide, acuminate at apex, sub- 
cuneate at base, petiolate (petioles 1 to 1.5 cm long), serrate except in the lower 
part, subtriplinerved (lateral nerves extending to upper third of blade), the upper 
surface bearing numerous conspicuous, filiform cystoliths and, at the margin, larger 
fusiform ones, the under surface sparingly black-punctate, bearing a few faint 
filiform cystoliths; plants dioecious; pistillate cymes about 1.5 cm long including 
a slender peduncle, few-branched, the flowers pediceled, the perianth segments 
unequal, the achenes compressed, about 1 mm long. 
Type in the U. S. National Herbarium, no. 1,456,455, collected in forest at 
Umbrfa, Comisaria del Putumayo, Colombia, altitude about 325 meters, October 
22, 1930, by Guillermo Klug (no. 1672). 
This species rather closely resembles P. poeppigiana, under which name dupli- 
cates of the type have been widely distributed. It differs from that, however, in 
the much larger, persistent stipules, the relatively few and inconspicuous cysto- 
liths on the under surface of the leaves, and the larger achenes. 
88. Pilea multiflora (Poir.) Wedd. Ann. Sci. Nat. III. Bot. 18: 218. 1852, in 
part. 
Uriica multiflora Poir. in Lam. Encycl. Suppl. 4: 223. 1816. 
Pilea anomala Wedd. Ann, Sci. Nat. III. Bot. 18: 217. 1852. 
Erect herb, up to 1 meter high, glabrous throughout, the stem simple or few- 
branched; stipules triangular, not more than 1 mm long, soon deciduous; petioles 
1 to 3 cm long; leaves oblong-lanceolate to ovate-lanceolate, rarely oblanceolate, 
suboblique, 4 to 15 cm long, 1.5 to 4 cm wide, long-acuminate at apex, rounded 
or subacute at base, sharply serrulate, trinerved, the cystoliths linear and puncti- 
form, faint; plants monoecious or dioecious, the inflorescences unisexual, both 
kinds cymose-paniculate, diffuse; achenes ovate, 1 to 1.5 mm long, compressed, 
longitudinally elevated at center, slightly thickened at margin. 
Distribution: Central Peru to central Bolivia, at 600 to 2,200 meters altitude. 
Pbru: Jussieu (P, type); Dombey (P). 
HuAnuco: Pampayacu, Weberbauer 6812 (B). 
JuNfN: Along Pichis Trail, Killip & Smith 25775 (F, US, Y), 25801 (US, Y), 
25913 (US), 25929 (US, Y). 
Pono: Sandfa, Weberbauer 6521 (B). 
Cuzco: Cerro de Cusilluyoc, Pennell 14013 (Ph). 
Bolivia: Lambramani, Cdrdenas 1316 (Y). 
La Paz: Province of Inquisivi, Weddell 4184 (P, type of P. anomala). Yungas, 
Rusby 1478 (US, Y). Sorata, Mandon 1104 (BM, Gen, K, P, V). Songo, 
Bang 894 (B, BM, F, G, K, Ph, US, V, Y). Tipuani Valley, Buchtien 
7262 (B, US), 7263 (B, US). Mapiri Region, Buchtien 657 (B, US). 
Unduavi, Bang 2490 (K, US, Y). 
Santa Ckuz: San Mateo, Steinbach 8542 (B). 
Cochabamba: Incachaca, Steinbach 5709 (B, F), 5812 (B). Chimor<5, Cdr- 
denas 2074 (G). 
This species has been confused with P. mutisiana, to which it bears a general 
resemblance. The pistillate inflorescence is diffuse, and the achenes are strongly 
flattened and thickened at the margin and have a longitudinal ridge at the center. 
KILLIP—ANDEAN SPECIES OF PILEA 509 
I have made direct comparison between the types of P. anomala and P. 
multiflora and can see no important differences. 
89. Pilea picta Herzog, Mod. Rijks Herb. Leiden no. 27, 76. 1916. 
Pilea macropkylla Busby, Descr. S. Amer. PI. 10. 1920. 
Plant herbaceous, glabrous throughout, the stem repent, at length erect, 20 
to 30 cm high; stipules not more than 1 mm long, soon deciduous; leaves narrowly 
lanceolate or elliptic-lanceolate, 6 to 15 cm long, 1 to 4 cm wide, caudate-acuminate, 
narrowed at base, sessile or subsessile, trincrved, sharply serrate or serrulate to 
base, the teeth larger toward the apex, the cystoliths minute, filiform and sub- 
punctiform, inconspicuous beneath; plants dioecious, rarely monoecious; stami- 
nate inflorescence diffusely cymose, up to 12 cm wide, long-peduncled, the perianth 
about 1.5 mm wide, purplish; pistillate cymes barely 1 cm long (including peduncle), 
few-branched, the perianth segments subequal; achenes ovate, about 2 mm long, 
longitudinally ridged at center. 
Distribution: Western Bolivia, up to 3,300 meters altitude. 
Bolivia: Bang (Y, type of P. macropkylla). Choquetanga Grande, alt. 3,300 
meters, Herzog 2416 (Gen, type collection). 
La Paz: Unduavi, Buchtien 3110 (K, US, Y), 4524 (US), 8940 (US), without 
number (G); Julio 332 (US), 357 (US), 466 (US). 
XI. Molleb 
90. Pilea mollis Wedd. Arch. Mus. Hist. Nat. (Paris) 9: 251. 1856-57. 
Pilea suceulenta Wedd. Arch. Mus. Hist. Nat. (Paris) 9 : 256. 1856-57. Not 
P. suceulenta Hook. f. 1847. 
Erect herb, 30 to 40 cm high, simple or few-branched, pilosulous above; leaves 
oblong to elliptic-lanceolate, 6 to 15 cm long, 2.5 to 5.5 cm wide, acuminate at 
apex, rounded or acutish at base, sharply but often shallowly serrulate, at least 
in upper half, glabrous above, softly pilosulous on nerves and veins beneath; 
cystoliths linear and fusiform, less conspicuous beneath; plants monoecious or 
dioecious; staminate flowers in globose umbels about 1.5 cm in diameter, the 
peduncles 3 to 8 cm long, the pedicels 3 to 4 mm long, slender, densely cano-pilo- 
sulous, the perianth lobed to middle, the lobes ovate; pistillate inflorescence 
cymose-paniculate, pedunculate, diffuse; achenes ovate, scarcely 1 mm long. 
Distribution: Northern Venezuela. 
Venezuela. 
Federal District: Caracas, Pittier 9585 (G, US, Y); Kuntze 1670 (K, US, Y); 
Funck 145 (Gen, P, type of P. suceulenta Wedd.). Cerro de Galip&n, 
Eggers 13178 (US). Caripe, Morilz (B). Sanchorquiz, Ernst 1705 
(BM). 
Abaqtja: Colonia Tovar, Morilz 366 (B, BM, type, K); Fendler 1241 (A, G, 
Gen, K). 
Readily recognized by its large globose staminate heads and the dense indument 
on the under surface of the leaves. 
Pilea suceulenta Wedd. apparently is a form of this, with thicker, coarsely 
serrate leaves, the nerves and veins of which are deeply impressed above. The 
type specimen of P. mollis is a pistillate plant, the single flowering branch of 
which is a detached long-peduncled cyme well past maturity. The shape of 
the leaves of this is almost identical with that of the Kuntze specimen cited 
above, though the nerves in the latter are not conspicuously impressed. Only a 
single staminate head is present on the Kuntze specimen, but that is identical 
with typical material of P. mollis. 
510 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
91. Pilea forgeti N. E. Brown, Bot. Mag. Curtis 143: pi. S699. 1917. 
Low herb, 10 to 15 cm high; stem branched at the base, appressed-pilose; stipules 
ovate-lanceolate, 1 to 2 cm long, 5 to 6 mm wide, persistent; leaves oblanceolate 
or elliptic-lanceolate, 2 to 10 cm long, 2 to 5 cm wide, abruptly acute or subobtuse 
at apex, eubauricular at base, erenate-serrate, trmerved (nerves extending to 
apex of blade), the petioles up to 1.5 cm long, the cystoliths inconspicuous, the 
upper surface of the blade glabrous, reddish brown, green along the nerves, the 
under surface appressed-pubescent on the nerves, purple, with green nerves and 
veins; plants dioecious; staminate flowers short-pedicellate, in a large compact, or 
at length somewhat diffuse, dichotomous cyme, the peduncle 5 to 6 cm long; 
pistillate flowers in small, sessile or subsessile cymes. 
Distribution: Venezuela; apparently also in Panama. 
Venezuela: Forget (K, type}. 
92. Pilea pittieri Killip, Journ. Washington Acad. Sci. 15: 298. 1925, 
Plant herbaceous, decumbent or erect, up to 40 cm high, the stem simple or 
few-branched, glabrescent below, sparingly pubescent above, densely marked 
throughout with linear cystoliths; stipules linear-oblong, 5 to 6 mm long, decidu- 
ous; leaves ovate or ovate-lanceolate, 3 to 10 cm long, 1.5 to 7 cm wide, long- 
acuminate at apex, rounded or subcordate at base, 3- (or occasionally 5) nerved 
(inner lateral nerves three-fourths length of blade), reticulate, serrate or serrate- 
crenate nearly to base, the upper surface dark green, glabrous, bearing numerous 
minute linear cystoliths, especially along the nerves, the under surface paler, 
densely pubescent on nerves and veins, punctate on veins, bearing similar but 
less numerous cystoliths; plant monoecious; staminate cymes solitary in the 
axils of the lower leaves or at the leafless nodes of the rooting portion of the stem, 
subsessile (or on peduncles up to 3 cm long), pubescent, densely flowered; pistillate 
inflorescence solitary in the axils of the upper leaves, 4 to 5 cm long, the peduncles 
slender, glabrous, 2 to 4-forked, the flowers borne in subglobose clusters 3 to 4 mm 
wide; achenes ovate, 1 mm long, acute, flattened, unicostate at center of both 
faces. 
Distribution: Costa Rica and northern Colombia, the type collected in Costa 
Rica by H. Pittier (Herb. Inst. Phvs. Geog. Costaricensis 14149). 
COI'OUBIA. 
BolIvar: Antizalea, alt. 1,700 to 2,000 meters, Pennell 4416 (Y). 
93. Pilea t&tamensis Killip, Journ. Washington Acad. Sci. 13: 358. 1923. 
Stem repent, at length erect, coarse, up to 35 cm high, simple or branched 
toward summit, hirsute throughout; leaves ovate or elliptic-ovate, 2 to 0 cm long, 
sharply serrate nearly to base, glabrescent above, appressed-hirsute on nerves 
beneath, 3-nerved, the lateral nerves reaching about to middle of blade, the 
cystoliths linear, minute, faint; staminate heads globose, about 1 cm wide, densely 
flowered, the peduncles up to 1.5 cm long, the perianth lobes filiform, about 2 
mm long; pistillate heads cymose, up to 1.5 cm wide; achenes ovate, 1 mm long. 
Distribution: Northern parts of Central and Western Cordilleras of Colombia, 
at 2,500 to 2,700 meters altitude. 
Colombia. 
Antioquia: Medellfn, Toro 949 (Y). 
Caldas: Cerro Tatam£, alt. 2,700 meters, Pennell 10325 (G, US), 10378 
(US, type). 
This species has a general resemblance to P. fattax, but is at once distinguished 
by the 3-nerved leaves. 
94. Pilea submissa Wedd. in DC. Prodr. 161: 151. 1369. 
Plant terrestrial or repent on tree trunks, the erect or ascending portion of the 
stem less than 10 cm long, pubescent; leaves rhombic-elliptic, 4 to 9 cm long, 1.5 
KILLIP—ANDEAN SPECIES OF PILEA 511 
to 3.5 cm wide (extremes up to 15 cm long and 7 cm wide), acuminate at the 
apex, acute at the base, short-petioled, crenate-serr ulate, glabrous above, his- 
pidulous on the nerves and principal veins beneath, the cystoliths minute, fusiform, 
very numerous; plants monoecious or dioecious, the cymes unisexual; staminate 
flowers in compact or at length subdivaricate cymes with slender peduncles 4 to 
8 cm long, borne at the rooting, leafless nodes, the lobes ovate, 2 mm long, in- 
cluding a tip 0.8 to 1 mm long; pistillate cymes borne at the upper axils, similar 
to the staminate, the peduncles slender, 2.5 to 3 cm long; achenes about 2 mm long, 
flattened. 
Distribution: Amazon basin of Ecuador and Peru, at low elevations. 
Ecuador. 
Napo-Pastaza: Archidona, Mexla 7307 (TJS), 
Peru. 
San MartIn: Tarapoto, Spruce 4155 (K, type). 
Lobeto: Pongo de Manseriche, Mexla 6359 (US). Pumuyacu, King 3186 
(US). 
JunIn: San Nicolas, Pichis Trail, alt. 1,100 meters, Killip <fc Smith 26023 
(US, Y). 
65. Pilea latifolia Wedd. Arch. Mus. Hist. Nat. (Paris) 9; 249. 1856-57. 
Plant suffrutescent, the branches cano-pilosulous above; leaves broadly ovate or 
elliptic-obovate, 6 to 12 cm long, 5 to 8 cm wide, short-acuminate at apex, rounded 
or cordulate at base, irregularly and doubly crenate-serrate, triplinerved or quin- 
tuplinerved, glabrous above, pilosulous on the nerves beneath, the cystoliths 
linear; plants dioecious; staminate inflorescence compactly and narrowly panicu- 
late, the peduncle more than twice as long as the adjacent petiole, the perianth 
segments with subulate tips; pistillate flowers in smaller cymes, with shorter 
peduncles. 
Distribution; Eastern Cordillera of Colombia, at 2,000 to 2,300 meters alti- 
tude; also in Venezuela. 
Venezuela: Criiger (K). 
Colombia. 
Norte de Santander: Ocafia, jScftim 701 (Bo, Gen, HNC, K, P, type). 
Santander: AndrS 1053 (Y). SuratA, Killip & Smith 16560 (G, US, Y). 
Charta, Killip <fc Smith 19032 (US), 
96. Filea gallowayana Killip, Contr. U. S. Nat. Herb. 26: 392. 1936. 
Pilea grandis var.? triplinervia Wedd. in DC. Prodr. 101: 143, 1869. 
Plant herbaceous, the stem repent at base, at length erect, 20 to 35 cm high, 
leafy, at least toward the apex, glabrescent below, glabrescent or usually rufo- 
hirsute above the middle; stipules broadly ovate-lanceolate, 9 to 10 mm long, 
obtuse, glabrous, persistent; leaves rhombic-ovate or ovate-elliptic, 3 to 12 cm 
long, 2 to 7 cm wide, acute or acuminate at apex, rounded or emarginate at base 
(petioles up to 1.5 cm long), unequally and often doubly crenate-serrate, tripli- 
nerved or quintuplinerved, the lateral nerves extending to the upper third of the 
blade, the upper surface glabrous, or sparingly pilosulous with hyaline hairs, and 
copiously covered with fusiform and punctiform cystoliths, the under surface 
hirsute on the nerves, sparingly pilosulous elsewhere, bearing numerous puncti- 
form and a few linear cystoliths; plants dioecious, the staminate and the pistillate 
inflorescences each in compact cymes up to 1.5 cm wide, similar in shape, the 
peduncles slender, up to 2 cm long, often hirtellous; staminate perianth glabrous or 
pilosulous, densely covered with fusiform cystoliths without; pistillate perianth 
with unequal segments; achenes broadly ovate, 1 to 1.2 mm long. 
512 CONTRIBUTIONS FROM THB NATIONAL HERBARIUM 
Distribution: Western Cordillera of Colombia, up to 2,000 meters altitude. 
Colombia: " Pro v. de Barbacoas y Choc6, alt. 200 m," Triana 891 (B, HNC, 
K, type of P. grandis var.? triplinervia). 
El Choc6: Between La Oveja and Quibdd, Archer 1701 (US). Headwaters 
of the Rfo Tutunendo, east of Quibd6, Archer 2184 (US), 2189 (US). 
El Valle: La Cumbre, alt. 2,000 meters, Pennell & Killip 5878 (G, US, 
type, Ph, Y). Mountains west of Buenaventura, Lehmann in 1878 (V). 
El Cauca: El Tambo, Sneidern 413 (S), 773 (S), 975 (S), 993 (S). 
NabiSo: Tuquerres, alt. 150 meters, Triana in 1853 (HNC). Armada, 
Andrt K1680 (K). 
Pilea grandis var. triplinervia, type material of which I have seen since describ- 
ing P. galloway ana, seems to be only a more robust form of this. In the recent 
Sneidern specimens the indument on the stem is much denser than in the typical 
form. In view of this additional material an amplified description of the species 
Is given. 
XII. PubESCENTES 
97. Pilea nummularifolia (Swartz) Wedd. Ann. Sci. Nat. III. Bot. 18: 255. 
1852. 
Urtica nummularifolia Swartz, Svensk. Vet. Akad. 8; 63. pi. 1, f, 2. 1787. 
Stem slender, villosulous, repent or trailing, rooting at most of the nodes, with 
short, lax branches sometimes arising at the nodes; stipules broadly ovate, 2 to 3 
mm long, membranous, persistent; leaves orbicular, 5 to 12 mm in diameter, 
crenate, trinerved, usually strigillose with stiff, hyaline hairs on both surfaces, 
the cystoliths minute, linear, very faint on the under surface; plants dioecious or 
occasionally monoecious, a few pistillate flowers being borne at the base of the 
staminate; staminate flowers densely clustered in the uppermost axils, with 
densely white-villous pedicels 3 to 5 mm long; pistillate flowers in densely 
flowered, short-peduncled cymes; achenes barely 0.4 mm long. 
Distribution: West Indies, Panama, Venezuela, and Amazonian Peru, at low 
elevations; introduced into eastern Brazil. 
Venezuela. 
Federal District: Caracas, Rose 21946 (US); Piiiier 7145 (US). 
Peru. 
Loreto: Pebas, on Rio Amazon, L. Williams 1917 (F, US). 
The indument of these specimens is rather denser than in most West Indian 
material of P. nummularifolia. The only one in flower, Pittier 7145* a staminate 
plant, has long-pediceled flowers in a cluster at one of the upper nodes of a short 
branch, this inflorescence agreeing well with the few staminate specimens from 
the West Indies at hand. Klug has collected abundant material of a plant which, 
at first glance, bears only slight resemblance to the quite uniform specimens of 
P. nummularifolia. In most of the Klug plants the lower portion of the stem is 
repent and leafless, and the upper part is erect, with leaves densely massed near 
the apex, its habit thus being that of P. involucrata, P. spruceana, and their allies. 
These leaves are much larger than in typical P. nummularifolia, attaining a maxi- 
mum length and width of 3.5 cm, and averaging about 3 cm long and 2.5 cm wide. 
Many of them are broadly ovate, rather than strictly orbicular. The staminate 
inflorescence, the only one seen, is long-peduncled, though otherwise it is charac- 
teristic of P. nummularifolia. Some of these plants, however, have sterile 
branches rooting at all the nodes and bearing small orbicular leaves, apparently 
differing in no way from those of P. nummularifolia. This collection may repre- 
sent a distinct species, but I prefer for the present to treat it as a variety. 
KILLIP—ANDEAN SPECIES OF PILEA 513 
Filea nummularifolia var. klugii Killip, var. nov. 
Caulis basi repens, demum erectus, ramis sterilibue nodis omnibus radicantibus; 
folia orbiculata vel late ovata, ea ramorum sterilium minora; inflorescentia & 
pedunculata. 
Plant densely hirsute throughout; stem repent at base, at length erect, 4 to 5 
cm high, simple or with a few sterile repent branches rooting at all the nodes; 
leaves of the fertile part densely massed toward the apex, orbicular or broadly 
ovate, 1.5 to 3.5 cm long and broad, those of the sterile shoots orbicular, up to 
1 cm long and broad; staminate inflorescence borne in the upper axils, peduncled, 
the peduncle slender, 1.5 to 2 cm long. 
Type in the U. S. National Herbarium, no. 1,458,571, collected on river bank, 
Juan Jui, Alto Rio Huallaga, Department of San Marttn, Peru, altitude 400 to 
800 meters, January 1936, by Guillermo Klug (no. 4235). 
98. Filea acuminata Liebm. Dansk. Vid. Selsk. Skrivt. V. 2: 302. 1851. 
Plant herbaceous, 15 to 40 cm high; petioles up to 4 cm long; leaves ovate, 
elliptic-ovate, or elliptic-lanceolate, up to 15 cm long, 7 cm wide, acute or acumi- 
nate at apex, rounded or aubcuneate at base, coarsely and sharply dentate, 
sparsely strigillose with long hyaline hairs above, appressed-hirsute or hirsutulous 
on the nerves beneath; plants dioecious or monoecious, the cymes diffusely 
branched, with peduncles 3 to 6 cm long, unisexual or sometimes a sessile cluster 
of staminate flowers borne on the pistillate cymes; staminate perianth elongate, 
with filiform teeth; achenes minute. 
Distribution: Mexico and Costa Rica; Colombia, at 1,000 to 1,500 meters 
altitude, the type from Mirador, State of Veracruz, Mexico, collected by F. M. 
Liebmann. 
Colombia. 
Santander: El Roble, Killip <fe Smith 19370 (G, US, Y). 
North de Santander: Between Ocafia and Pamplona, Kalbreyer 1039 
(B, K). 
BoyacA: Labranzgrande, Guevara 344 (US). 
Cundinamarca: Upln, Andrt K1677 (K). Susumuco, Andri K1678 (K). 
ElCauca: La Gallera, Micay Valley, KiUip 7672 (B, G, Ph, US, Y). 
99. Pilea Involucrata (Sims) Urban, Symb. Antill. 1: 298. 1899. 
Vrtica involucrata Sims, Bot. Mag. Curtis 51: pi. 248 1 -1824. 
Pilea chrysosplenioides Wedd. Ann. Sci. Nat. III. Bot. 18: 231. 1852. 
Pilea pubescens var. involucrata Wedd. in DC. Prodr. 16l: 153. 1869. 
Stem and branches usually hirsute, densely covered with linear cystoliths; 
leaves ovate to obovate, or the lower often suborbicular, 0.8 to 4 cm long, 0.8 to 
2 cm wide, rounded at apex, rounded or subauriculate at base, finely crenate, 
ciliate, strigillose with hyaline hairs, or rarely glabrous above, the cystoliths 
linear or fusiform, covering the lower surface, usually confined to margin on upper 
surface; plants monoecious or dioecious, the cymes unisexual, occasionally andro- 
gynous, sessile or subsessile, the staminate few-flowered, at base of branched* 
many-flowered pistillate cymes; achenes minute, less than 0.5 mm long. 
Distribution: Panama and West Indies to Colombia and Venezuela, up to 
1,500 meters altitude. 
Venezuela. 
Sucre: Cristobal Col6n, Broadway 42 (US, Y), 646 (US, Y). 
Federal District: Caracas, Bailey & Bailey 906 (US); Pittier 12417 (US). 
Araoua: Between Ocumare and Maracay, PitUer 11863 (K, US). Colonia 
Tovar, Fendler 1244 (Brux, G, Gen, K, Mo). 
Colombia: Mutis 1922 (Ma). Rio Simanche Andrt 4674 (K). Palanda, Andri 
K1666 (K). 
514 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Magdalena: Santa Marta, H. H. Smith 1445 (F, K, US, Y). 
Norte de Santander: Chin&cota, KUlip & Smith 20800 (US). 
Cundinamarca: Fusagasugd, Goudot (P, type of P. chrysosplenioides); 
PenneU 2731 (F, G, Mo, US, Y). Bogotd, StUbel 90e (B). Alb&n, 
Pirez 2374 (US). 
Ptjtumayo: Sibundoy, Garcia 4578 (US), 
To LIMA: La Plata, Lehmann K333 (K). 
Antioquia: Medellfn, Toro 624 (Y). 
El Valle: Zarzal, Pennell, KUlip, & Hazen 11887 (US). La Cumbre, culti- 
vated, KiUip 5845 (US). La Paila, Holion 256 (K, Ph). 
Wedd ell treated Urtica involucrata, the earliest name of this group of Pileat 
as a variety of P. pubescens, but, as pointed out by Urban, it can scarcely be 
associated with that species. The original description of Urtica invohicrata is 
unsatisfactory, but the illustration closely resembles the plant that has generally 
passed as P. chrysosplenioides. 
100. Pilea cera to calyx Wedd. in DC. Prodr. 16': 148. 1869. 
Plant densely grayish hirsute throughout; stem repent at base, at length erect, 
up to 15 cm high; stipules ovate or subreniform, about 6 mm long; leaves oblong 
or elliptic-ovate, 3 to 7 cm long, 1 to 3 cm wide, acuminate at apex, attenuate at 
base, sharply serrate except toward base, the cystolithe punctiform and fusiform; 
plants monoecious, the cymes apparently unisexual, the staminate compact, 
subsessile, about as long as the adjacent petioles, the pistillate divaricate, pedun- 
culate, much longer than the petioles; achenes about 0.6 mm long. 
DISTRIBUTION: Probably northern Peru. 
Peru: Poeppig 3046 (B, Bo, Gen, type). 
HuAnuco: Cochero, Poeppig 1032 in part (BM, V). 
These specimens are variously labeled "Peru" and "Brazil" in herbaria. 
101. Pilea spruceana Wedd. in DC. Prodr. 16': 161. 1869. 
Stem repent, at length erect, sparsely villous; leaves oblong or ovate-oblong, 
2 to 8 cm long, 1.5 to 4 cm wide (the lower smaller), obtuse or subacute at apex 
and base, crenate-serrate, sparingly ciliate, the petioles 0.5 to 3.5 cm long, the 
cystoliths punctiform and fusiform, the fusiform more numerous at margin, 
yellowish, much elevated; plants monoecious or dioecious, the pistillate flowers 
in densely flowered, short-peduncled, usually much-branched cymes, the stam. 
in ate flowers subsessile at base of pistillate cymes; achenes about 0.5 mm long- 
Distribution: Subandean part of northern Peru and northwestern Bolivia. 
Peru. 
San MartIn: Tarapoto, Spruce 4376 (B, BM, Brux, Gen, I\, type, V, Y). 
Lorkto: Cumbaso, 6843 (B, Gen). 
HuAnuco: Posuso, Pearce 284 (BM). 
Bolivia. 
La Paz: Rfo Cocos, R. S. Williams 199 (BM, US, Y). 
102. Pilea pubescens Liebm. Dansk. Vid. Selsfe. Skrivt. V. 2: 302. 1851. 
Pilea monlana Wedd. Ann. Sci. Nat. III. Bot. 18: 228. 1852. 
Pilea ptcbescens var. montana Wedd. in DC. Prodr. 16l: 153. 1869. 
Stem repent, at length erect and usually with several erect or ascending branches, 
strigillose; leaves massed at the end of the stem or branches, wanting or much 
reduced below, broadly ovate to elliptic-ovate, up to 7 cm long and 6 cm wide, 
rounded or subacute at apex, rounded at base, finely to coarsely crenate-serrate, 
often ciliate, thin, sparingly strigillose or nearly glabrous above, hirsutulous 
KILLIF—ANDEAN SPECIES OF PILEA 
515 
beneath on the nerves and veins, the cystoliths linear and fusiform above, obscure 
beneath; plants monoecious or dioecious; staminate flowers in a few-flowered 
sessile cluster at base of pistillate cymes or a few scattered among pistillate 
flowers; pistillate inflorescence cymose-paniculate, up to 5 cm long, densely 
flowered, the branches slender; achenes less than 0.5 mm long. 
Distribution: Mexico, Central America, and West Indies to Peru and Vene- 
zuela, and perhaps to eastern Brazil; in South America at low elevations. 
Venezuela. 
Federal District: Caracas, Gollmer in 1853 (B). 
Lara: Palmasola, Pittier 6379 (B, US). 
M£rida: La Asulita, Reed 706 (US). 
Colombia. 
El Valle: Cisneros, Killip 11440 (G, Ph, US, Y). Buenaventura, Triana 
876 (HNC, K, P). 
El Cauca: El Tambo, Sneidern 995 (S). 
NariSJo: La Cruz, Andri KI672 (K, Y). 
Ecuador. 
Manabi: El Recreo, Eggers 15022 (B, F, K, P, Y). 
Guayas: Tereeita, Stevens 59 (US). Balao, Eggers 14120 (B, US), Naran- 
jaJ, Andri 2508 (K). 
Pichincha: Santo Domingo, Sodiro 153/36 (B). 
Nafo-Pastaza: Tena, Afexia 7215 (US). 
Peru. 
San MARTfN: Tarapoto, Spruce 4455 (B, BM, Brux, Gen, K, P, V, Y), 
San Roque, L. Williams 6957 (F, US), 7695 (F, US). 
The species of this immediate relationship, P. acuminata, P, involucrata, P. 
spruceana, and P, pubescens, are not separable by well-defined characters. Pilea 
acuminata has long-petioled, acuminate, sharply toothed leaves; in P. involucrata 
the leaves are obovate and shallowly toothed; in P. spruceana oblong and shallowly 
toothed; and in P. pubescens predominantly broad-ovate. The foliar cystoliths 
of P. acuminata and P. pubescens are similar; in P. involucrata they usually are 
wanting from the upper surface except at the margin; in P. spruceana they are 
much smaller and much more numerous than in the three other species. 
Pilea pubescens as here considered is perhaps an aggregate species, the specimens 
cited showing considerable variation. As the species is common outside of the 
Andean area, final treatment of the complex should await a broader study. The 
Andean material seems to represent three forms, of which typical P. pubescens 
is best shown by Spruce's no. 4455. The Venezuelan specimens have very 
broad leaves, which are essentially glabrous above. The Ecuadorean specimens 
have smaller leaves and are more densely pubescent in all parts. 
103. Pilea hyalina Fenzl, Denkschr. Akad. Wiss. Math. Naturw. (Wien) X; 
256. 1850. 
Urtica arvensis Poepp.: Fenzl, Denkschr. Akad. Wiss. Math. Naturw. (Wien) 
1: 256. 1850, as synonym. 
Pilea hyalina var. longipes (Mart.) Miquel in Mart. Fl, Bras. 4l: 201. 1853. 
Slender erect annual, 10 to 30 cm high, with a short rootstock and numerous 
fibrous rootlets, the stem pellucid; leaves rhombic-elliptic or ovate, 1 to 6 cm 
long, 0.8 to 4-5 cm wide, acute at apex, cuneate at base, coarsely serrate, thin- 
membranous, glabrous or sparsely hyaline-strigillose above, the petiole slender, 
usually with a few hyaline hairs, the cystoliths linear, faint; plants monoecious, 
the inflorescences androgynous, cymose-paniculate; achenes suborbicular, less 
than 0.5 mm long. 
516 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Distribution: Mexico and Central America to Chile, Brazil, and Argentina, 
up to 1,500 meters altitude, the type from Rio de Janeiro, collected by Schtich. 
Venezuela. 
Federal District: Caracas, Gollmer in 1853 (B). 
Aragua: Colonia Tovar, Fendler 1245 (K), 1826 (K). Ocumare Valley, 
Piiiier 12166 (B, Gen, US). 
Colombia. 
Magdalena: Santa Marta, H. H. Smith 1447 (B, F, Gen, Ph, US, Y), 1448 
(B, F, Ph, US, Y). 
Norte de Santander: Chin&cota, Killip & Smith 20804 (G, US). 
Tolima: Quindfo Trail, Triana 878 (HNC, P). 
Antioquia: Medellin, Archer 895 (US). Fredonia, Toro 1077 (Y). 
El Valle: Cisneros, Killip 11457 (US). 
Ecuador. 
Guayas: Bucay, Hitchcock 20404 (US). 
Chimborazo: Pallatanga, Sodiro 153/31 (B). 
Peru: Mathews 2032 (K); Gay (P); Ruiz & Pavdn (Ma). 
Amazonas: Moyobamba, Mathews 1555 (K). 
San MARTfK: San Roque, L. Williams 7149 (F, US), 
HuAnuco: Cochero, Poeppig 1539 ("Urtica arvensis Poepp.," Gen). 
JttnIn: La Merced, Killip & Smith 23593 (US). San Ram6n, Killip & Smith 
24676 (US, Y), Yapas, Pichis Trail, Killip & Smith 25580 (US). 
Ayacucho: Aina, Killip & Smith 22746 (F, US, Y). 
Bolivia. 
La Paz: Yungas, Bang 2126 (B, BM, US, Y); Rushy 2561 (Y). Tipuani, 
Buchtien 5390 (B, US, Y), 7261 (B, US). 
Chile : Cordillera de San Fernando, Meyen (B). 
This is a well-marked species, the numerous specimens examined showing little 
variation. In a few specimens the characteristic hyaline hairs are lacking. 
104. Pilea arguta (H. B. K.) Wedd. Ann. Sci. Nat. III. Bot. 18: 218. 1852. 
Urtica arguta H. B. K, Nov. Gen. & Sp. 2: 39. 1817. 
Straggling, somewhat shrubby herb, the stem much branched, the branches 
hirsute or nearly glabrous, densely leafy; leaves narrowly lanceolate to ovate- 
lanceolate, 1.5 to 5 cm long, 0.5 to 2 cm wide, acuminate at apex, glabrous above, 
sparsely pilosulous on nerves beneath, rarely glabrous throughout, often alternate 
on branches, the cystoliths punctiform above, with usually a few linear ones be- 
tween nerves, all linear and conspicuous beneath; plants dioecious, the staminate 
and pistillate flowers in similar, few-flowered, sessile or subsessile clusters scarcely 
5 mm long; achenes ovate, about 0.7 mm long. 
Distribution: Venezuela (?); southern Colombia and northern Ecuador, at 
2,800 to 3,000 meters altitude, the type said to have been collected at Nueva 
Valencia, Carabobo, Venezuela. 
Venezuela or Colombia; Humboldt Bonpland (B, BW, P, type). 
Colombia. 
Ei» Cauca: Paletard, Pennett 7011 (US). Mount Purac6, Killip 6772 (G, 
US). 
NARiffo: Pasto, Andri 2997 (K). Tabano, Andri K1681 (K). Tuquerres, 
Karsten (V). 
Ecuador: "Andes Quitenses," Hall in 1833 (B). 
CABCHf: Ibarra, Hitchcock 20790 (G, US), 20803 (G, US). 
Pichincha: Mount Pichincha, Jameson 838 (BM, US); Sodiro 153/52 (B), 
153/52b (B); Benoist 3257 (P). 
The plant which I collected on Mount Purac6 was a dense mass of intertwined 
stems, with numerous short, very leafy branches, the whole about 1 meter high, 
KILLIP—ANDEAN SPECIES OP PILEA 517 
The specimens from southwestern Colombia and northern Ecuador cited above 
agree excellently with the type material at Paris and Berlin, which is without 
locality data but which the authors, in describing the species, say came from 
Nueva Valencia, "alt. 235 hex." [State of Carabobo, Venezuela]. I doubt very 
much that this plant of the highest mountains of southwestern Colombia and 
Ecuador occurs also in the coastal region of Venezuela at an altitude of only 570 
meters, and am confident that there is an error in the Humboldt-Bonpland data. 
105. Pilea fasciata Wedd. in DC. Prodr. 161: 149. 1869. 
Plant erect, robust, the stem densely and softly hirsute-tomentose with light- 
brown hairs; stipules ovate, 1.5 to 2 cm long, persistent; leaves ovate, 6 to 12 cm 
long, 4 to 7 cm wide, acuminate at apex, rounded at base, sharply and closely den- 
tate-serrate nearly to base, triplinerved (lateral nerves reaching to upper third of 
the blade), pilosulous and strongly asperate-bullate above, appressed-hirsute on 
the nerves beneath, white-fasciate above, the cystoliths linear, radiate from the 
center of the areoles; plants dioecious; pistillate inflorescence subcorymbose, di- 
chotomous, the peduncle 5 to 6 cm long slender; achenes ovate, about 1.5 mm long. 
Distribution: Known positively only from the type locality, in northwestern 
Colombia. 
Colombia. 
El Choc6: No vita, alt. 170 meters, Triana 886 (BM, type, HNC). 
The dense indument on the stem and the strongly asperate-bullate leaves at 
once distinguish this species from near relatives. Andre's 3816 probably belongs 
here, though the stem in much less densely pubescent. This specimen is interme- 
diate between P. fasciata and P. ophioderma, but as the leaves are sharply dentate- 
serrate rather than crenate-serrate, it is probably better placed in P. fa&ciata. 
The locality given on the label is Mindo, which is in the Province of Pichincha, 
Ecuador. 
1105a. Pilea ophioderma Killip, sp. nov. 
Herba dioica, caule crasso, quadrangulari; stipulae magnae, ovatae, subper- 
sistentes; folia ovato-1 anceolata, attenuato-acuminata, conferte crenato-serrata, 
trinervia, valde fasciato-reticulata, supra sparse hir&utula vel glabrescentia, Bubtus 
in nervis dense hirsutula, cystolithis obscuris; Cores in panicula compacta sub- 
sessili, ? in panicula laxa dichotoma pedunculata. 
Erect perennial herb. 50 cm high, or more; stem stout, quadrangular, about 6 
mm thick, glabrous, deep purple when dry, smooth, without cystoliths; stipules 
ovate, 2.2 to 3 cm long, X to 1.5 cm wide, rounded at apex, narrowed at base, 
flabellate-nerved, reddish brown, subpersistent; leaves ovate-lanceolate, 12 to 20 
cm long, 6 to 10 cm wide, attenuate-acuminate at apex, rounded and subemargi- 
nate at base, closely crenate-serrate to base, trinerved (lateral nerves extending 
to the apex of the blade), reticulate-veined (veins impressed above, the leaf sur- 
face slightly darker along the veins than in the areoles, hence the reticulation 
very prominent), smooth, sparingly hirsutulous or glabrescent above, densely sub- 
appressed-hirsutulous on the nerves beneath, the cystoliths faint, fusiform above, 
punctiform beneath; plants dioecious; staminate flowers short-pediceled in few- 
flowered clusters borne in a subsessile, compact panicle in the upper axils, the 
perianth subglobose, about 1.5 mm wide, the lobes not mucronulate; pistillate 
flowers in sessile clusters, forming a loose dichotomous panicle up to 6 cm long 
(including a peduncle half as long), the bractlcts ovate*lanceolate, about 5 mm 
long and 2.5 mm wide, subpersistent, the perianth segments ovate, nearly 1 mm 
long, subequal. 
Type in the U. S. National Herbarium, no. 1,140,932, collected in mossy forest, 
on a spur of Cerro Tatamd, Department of Caldas, Colombia, altitude 2,800 to 
518 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
3,300 meters (Western Cordillera), September 8-10, 1922, by F. W. Pennell (no. 
10450). 
This species differs from P. fasciata in having crenate-serrate rather than 
sharply dentate-serrate leaves, which, moreover, are smooth rather than strongly 
asperate-bullate. The stem is glabrous, whereas in typical P. fasciata it is densely 
hirsute. 
The specific name is suggested by the mottling on the upper surface of the 
leaves. 
106. Filea pavonii Wedd. Ann. Sci. Nat. III. Bot. 18: 219. 1852. 
Urtica cymosa Pavdn; Wedd. Ann. Sci, Nat. III. Bot. 18: 219. 1852, as 
synonym. 
Erect herb, 40 to 60 cm high, the stem stout, quadrangular, rufo-villosulous; 
leaves broadly ovate, 6 to 10 cm long, 4 to 6 cm wide, short-acuminate at apex, 
subrotund at base, crenate-serrate to base, triplinerved, subcoriaceous, finely 
appressed-pilosulous above, densely feiruginous-hirsute beneath, the petioles 1.5 
to 3 cm long, the cystoliths minute, fusiform above, fusiform and punctiform 
beneath; plants monoecious, the inflorescences unisexual; staminate inflorescence 
borne in the uppermost axils on stout peduncles much longer than the petioles, 
compact, densely flowered, scorpioid, globose when young, subsecund, the pistil- 
late inflorescence borne in the middle axils, cymose-pamculate, sessile or short- 
peduncled. 
Distribution: Central Peru. 
Peru: Pavdn (B, BM, Bo, Ma, P, type). 
HuAnuco: Mufla, alt. 2,000 meters, Macbride 4075 (F, US). 
This is a striking species, the young plants easily recognized by the dense 
globose heads of flowers. 
107. Filea hirsuta (Pav6n) Wedd. Ann. Sci. Nat. III. Bot. 18: 220. 1852, in 
part. 
Urtica hirsuta Pavdn; Wedd. Ann. Sci. Nat. III. Bot. 18 : 220. 1852, as 
synonym. 
Erect robust herb, the stem stout, ferruginous-villous; leaves ovate-elliptic, 7 
to 15 cm long, 3 to 7 cm wide, coarsely serrate to base, triplinerved well above 
base, rugulose, ferruginous-hirsute on the nerves above and on the nerves and 
veins beneath, otherwise glabrous* the petioles about 2 cm long, densely ferru- 
ginous-hirsute, the cystoliths fusiform; plants dioecious, the staminate and pis- 
tillate inflorescence similar, paniculate, shorter than or slightly exceeding the 
adjacent petiole. 
Distribution: Probably central Peru. 
Peru: Ruiz (B, Bo, type, US). 
There is some confusion in regard to this species, partly because of Weddell's 
varying treatments. At the original place of publication of Pilea hirsuta, Weddell 
cites as synonyms " Urtica hirsuta et U, pundata Pav. mss." Following the de- 
scription of the plant there appear these lines: 
"Var a, foliis oblongo-ovatis triplinerviis supra glabratis. 
Var p, foliis rotundato-ovatis trinerviis utrinque pubescentibus. 
Crescit in Peru via (Pav6n).—v. s. in Herb. Webb, ex Herb. Pavdn. 
Toute la plante prend, en sdchant, une teinte ferrugineuse." 
In the Monographic des Urticdes this is repeated, the manuscript name U. 
punctata Pavdn not, however, being included. In the Prodromus the species is 
treated thus: 
"P. hirsuta (Wedd. in Ann. Sc. Nat. 3e s6r. 18. p. 220. exclus. var. 0; Monogr. 
p. 251) In Nova Granata (Pavdn). Urtica hirsuta Pav. mscr   
Varietas & in Monographia mea notata atque olim in herb. Webb, visa, 
KILUP—ANDEAN SPECIES OF PILEA 519 
foliis minoribus rotundato-ovatis trinerviis (nec triplinerviis) et utrinque 
pubescentibus insignita, forsan hue non pertinet et denuo examinanda est." 
The specimens at the Boissier and Berlin herbaria bearing the name Urtica 
hirsiUa in either Ruiz's or Pavdn's handwriting, which are matched by an un- 
named one in the U. S. National Herbarium, agree with Weddell's description 
of var. a. The 0 element can not be definitely identified without examining the 
specimen in the Webb herbarium. There is a Ruiz and Pav6n specimen at Berlin, 
labeled apparently in the writing of one of the collectors " Urtica punctata Ruiz." 
This does not answer well Weddell's description of 0, for the leaves are triph'nerved 
and not "utrinque pubescentibus." This seems to be Pilea punctata (H. B. K.) 
Wedd., though, it should be observed, the use of the name " Urtica punctata" by 
both "H. B. K." and Ruiz and Pav6n was merely a coincidence. 
The locality "Nova Granata," i. e. Colombia, given in the Prodromus was 
clearly an error, for there is no evidence that Weddell saw any Colombian speci- 
mens that he took to be this species. Perhaps this error is partly responsible 
for the reference * of Mayor's specimens from northwestern Colombia to P. 
kirsuta. I have not seen these specimens, but I suspect they belong to the related 
species P. purpurea. 
108. Pilea purpurea Killip, Journ. Washington Acad. Sci. 13:357. 1923. 
Erect herb, 40 to 60 cm high, the stem angulate, glabrous below, slightly 
pubescent above; leaves ovate or oblong, 8 to 12 cm long, 4 to 5 cm wide, short- 
acuminate at apex, rounded at base, finely serrate, 3-nerved (lateral nerves close 
to margin, extending to apex of blade), above dark green and glabrous, beneath 
paler, punctate, densely tomentulous on nerves and veins, the cystoliths linear 
and faint above, wanting beneath, the petioles 1.5 to 3 cm long, ferruginous- 
tomentose; plants monoecious; staminate'cymes profusely dichotomous, densely 
tomentulous, borne in upper axils; pistillate cymes subsessile in lower axils, 
compact, barely 1 cm wide; achenes broadly ovate, 2 mm long. 
Distribution : Known only from the type locality, in northwestern Colombia. 
Colombia. 
Caldas: Cerro Tatami, 2,700 meters, Pennell 10380 (US, type). 
The foliage bears a general similarity to that of P. mutisiana, but the con- 
spicuous white bracts subtending the purple staminate flowers are not evident 
in P. mtUisiana nor has that species an indument. 
As already noted in discussing P. hirsiUa, possibly Mayor's specimens from 
northwestern Colombia belong here. 
109. Pilea glaucophylla Killip, Contr. U. S. Nat. Herb. 26: 392. 1936. Plate 40. 
Distribution: Central Colombia. 
Colombia. 
Tolima: Quebrada Honda, Andr6 K1669 (K, type). Tambo de 8avanilla, 
Andri K1668 (K). 
Explanation or Plats 40—PQea glaucophi/lla, the type specimen. One-half natural site. 
110. Pilea aalentana Killip, Contr. U. S. Nat. Herb. 26: 393. 1936. 
Distribution: Known positively only from the Central Cordillera of Co- 
lombia, between 2,700 and 3,300 meters altitude. 
Colombia: "Andes Granadin., alt. 2,500 m.," Triana 890 (HNC, K, P). Quindfo 
Trail, Holton in 1853 (Y). 
Tolima: Between Ibagu£and Mount Tolima, Cuatrecasas 2538(Ma),2590(Ma). 
Caldas: Pinares, above Salento, Pennell 9354 (G, US, type). Magafia, 
Quindfo Trail, Killip & Hazen 9447 (Ph, US). 
* M&n. Soc, Sci. Neuch&tel 5: 360. 1914. 
520 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
The Tri&na specimen in the Herb&rio National Colombiano bears the locality 
data given above. The other specimens of this collection are labeled "Bar- 
bacoas," perhaps in error. 
111. Filea castronis Killip, Contr. U. S. Nat. Herb. 36 : 394. 1936. 
Distribution : Known only from the type locality, in the Eastern Cordillera of 
Colombia, between 2,600 and 2,900 meters altitude. 
Colombia. 
Santander: Las Vegas, Killip & Smith 15949 (G, US, Y), 16019 (G, US, 
type, Y), 16126 (G, US, Y). 
111a. Pilea cushiensis Killip, Field Mus. Bot. 18*: 340. 1937. 
Succulent herb, 1 to 1.5 meters high; stem sparsely rufo-hirsutulous toward 
the apex; stipules ovate, about 3 mm long, soon deciduous; leaves elliptic-ovate, 
7 to 15 cm long, 3.5 to 6 cm wide, acuminate at apex, narrowed to a cordulate 
base, coarsely crenate-serrate, triplinerved, the lateral nerves extending to the 
upper quarter of the blade, the cystoliths linear, dense, faint beneath, the petioles 
up to 12 cm long; plants dioecious, the staminate inflorescences borne in most of 
the axils, paniculiform, about 3 cm long (not fully developed), rufo-hirsutulous, 
the perianth segments suborbicular. 
Distribution: Known only from the type locality, in central Peru. 
Peru. 
HuInuco: Cushi, alt. 1,500 meters, Macbride 4826 (F, type, US). 
In the key this species would come next to the Colombian P. caslronis, being 
differentiated by the shape of the leaves and the cystolithic marking, and by 
having a more diffuse inflorescence. 
LIST OF NEW SPECIES AND A NEW VARIETY 
Page 
Pilea numxnularifoUa var. klugii Killip  513 
Pilea ophioderma Killip    — 517 
Pilea scandens Killip  491 
Pilea umbriana Killip  508 
521 
INDEX TO NUMBERED SPECIMENS OP PIIEA 
The following list includes the numbered specimens studied 
All art, A. 
185. microphylla. 
484. dauciodora, 
Andr£, E. 
442. microphylla. 
879. mutisiana. 
1053. latifolia. 
1243. dauciodora. 
1302. rhombea. 
1895. argentea. 
2082. mutisiana. 
2453. serpyllacea. 
2508. pubeacens. 
2517. microphylla. 
2823. microphylla. 
2890. microphylla. 
2987. fallax. 
2997. arguta. 
3035. fallax. 
3510. pteropodon. 
3692. microphylla. 
3816. faeciata? 
4440. serpyllacea. 
4674. involucrata. 
K722. microphylla. 
K723. microphylla. 
K724. fallax. 
K725. fallax. 
K1487. mutsiana. 
K1666. involucrata. 
K1667. myriophylla. 
K1668. glaucophylia. 
K1669. glaucophylia. 
K1670 in part, macrantha 
K1670 in part, tetrapoda. 
K1671. tetrapoda. 
K1672. pubescens. 
K1673. alsinifolia. 
K1674. fallax. 
K1675. fallax. 
K1676. fallax. 
K1677. acuminata. 
K167S. acuminata. 
522 
K1679. carnulosa. 
K1680. gallowayana. 
K1681. arguta. 
K1682. goudotiana. 
K2215. carnulosa. 
Anthony, H. E.t and Tate, G. H. H, 
338. serpyllacea. 
425, serpyllacea. 
Archer, W. A. 
1. microphylla. 
2. microphylla. 
690. microphylla. 
770. microphylla. 
895. hyalina. 
1083. dauciodora. 
1084. dauciodora. 
1701. gallowayana. 
1793. microphylla. 
1977. trianaeana. 
2081. imparifolia. 
2129. daguensis. 
2172. daguensis. 
2184. gallowayana. 
2189. gallowayana. 
2190. imparifolia. 
Ari8Te Joseph, Brother 
A322. lindeniana. 
A329. rhombea. 
A888. linden iana. 
A890. discolor. 
A927. filicina. 
B80. lindeniana. 
Bailey, L. H., and Bailey, E. Z. 
313. microphylla. 
906. involucrata. 
Bano, M. 
687. strigosa. 
89%. multiflora. 
1787. dauciodora. 
KILLIP—ANDEAN SPECIES OF PILEA 523 
1788. filipes. 
1790. dauciodora. 
2fr26. hyalina. 
2374. cymbifolia. 
2490. multiflora. 
Bbnoist, H. 
2292. serpyllacea. 
3257. arguta. 
3583. serpyllacea. 
Boldinoh, I. 
5648. microphylla. 
Bridges, T. 
741. elliptica. 
742. elegans. 
Broadway, W. E. 
9. microphylla. 
42. involucrata. 
646. involucrata. 
Buchtien, O. 
85. strigosa. 
372. dauciodora. 
383. sublobata. 
657. multiflora. 
794. sublobata. 
795. strigosa. 
2811. pauciserrata. 
2813. dauciodora. 
3110. picta. 
3751. cymbifolia. 
3752. cymbifolia. 
3753. cymbifolia. 
3754. rusbyi. 
4524. picta. 
4526. buchtienii. 
5390. hyalina. 
7261. hyalina. 
7262. multiflora. 
7263. multiflora. 
8935. pauciserrata. 
8937. dauciodora. 
8938. strigosa. 
8939. strigosa. 
8940. picta. 
CArdenas, M. 
1316. multiflora. 
2074. multiflora. 
Charetier, C, 
65. microphylla. 
CLAUDS JOSEPH, Brothei 
1862. elliptica. 
2352. elliptica. 
3994. elliptica. 
4658. elegans. 
5607. elegans. 
Coos, O. F., and GILBERT, G. B. 
262. serpyllacea. 
1035. serpyllacea. 
1095. nutana. 
CORNEUO, Father 
132. microphylla. 
CRtfGEH, H. 
46. crugeriana. 
CuATRECASAS, J. 
2586. lindcniana. 
2587. dauciodora. 
2588. salentana. 
2589. mutisiana. 
2590. salentana. 
3087. lindeniana. 
3092. rhombea. 
3093. lindeniana. 
CXJMING, H. 
40. elliptica. 
CTFRRAN, H. M., and HAMAN, M. 
3. hemiarioides. 
DA WE, M. T. 
265. lindeniana. 
772. imparifolia. 
Dryander, E. 
94. microphylla. 
EQGERS, H. F. A. 
13178. mollis. 
13445. rhombea. 
14120. pubescens. 
15022. pubescens. 
ELIAB, Brother 
564. microphylla. 
524 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Ernbt, A. 
458, rhombea. 
1164. rhombea. 
1705. mollis. 
1706. crugeriana. 
Fendler, A. 
1240. microphylla. 
1241. mollis. 
1244. involucrata. 
1245. hyalina, 
1246. dauciodora. 
1247. fendleri. 
1826. hyalina. 
2429. urticella. 
Firmin, G. 
271. serpyllacea. 
369. serpyllacea. 
640. jamesoniana. 
Funcx, N, 
145. mollis. 
QARCfA B., H. 
4578. involucrata. 
4652. serpyllacea. 
Gat, G. 
68. elliptica. 
235. elliptica. 
236. elegans. 
Gehriger, W. 
203. rhombea. 
248. rhombea. 
258. serpyllacea. 
329. dauciodora. 
592. fallax. 
Guevara A., B. 
218. serpyllacea. 
252. rhombea. 
344. acuminata. 
F.l. fallax. 
GtTNCKEL, H. 
68. elliptica. 
Habkee, T. 
1731. nutans. 
1860. macrocystolithica. 
1870. haenkei. 
Hall 
5. flexuosa. 
28. serpyllacea. 
H AUGHT, O 
1274. centradenioides. 
1305. centradenioides. 
1592. centradenioides. 
Heinrichs 
32. serpyllacea. 
Heriberto, Brother 
342. microphylla. 
Herrera, F. L. 
6. nutans. 
51. serpyllacea. 
2288. serpyllacea. 
3065. serpyllacea. 
Herzog, T. 
2305. cymbifolia. 
2416. picta. 
Hitchcock, A. S. 
20404. hyalina. 
20790. arguta. 
20803. arguta. 
21445. serpyllacea. 
21825. hitchcockii. 
Hollermeyer 
511. elliptica. 
Holton, I. F. 
256. involucrata. 
262. dauciodora. 
Huber, J. 
1519. imparifolia. 
Jahn, A. 
595. rhombea. 
Jameson, W. 
481. serpyllacea. 
734. imparifolia. 
745. jamesoniana. 
789. flexuosa. 
834. serratifolia. 
838. arguta. 
KILLIF—ANDEAN SPECIES OF PILEA 
Julio, Brother 
332. pi eta. 
357. picta. 
462. strigosa. 
466. picta. 
Kalbreyer, G. 
531. lippioides. 
691. hydrocotyliflora. 
1023. alsinifolia. 
1039. acuminata. 
Killip, E. F. 
5117. seemannii. 
5439. microphylla. 
5698. imparifolia. 
5845. involucrata. 
6673. puracensis. 
6772. arguta. 
6777. fallax. 
6832. myriantha. 
6888. eerpyllacea. 
7672. acuminata. 
7678. scandens. 
7703. pteropodon. 
9772. mutisiana. 
11440. pubescens. 
11457. hyalina. 
11550. daguensis. 
Killip, E. P., and Hazen, T. E, 
8786. imparifolia. 
9007. flexuosa. 
9438. carnulosa. 
9447. salentana. 
9475. mutisiana. 
9482. mutisiana. 
10121. flexuosa. 
10129. scandens. 
11891. mutisiana. 
Killip, E, P., and Smith, A. C. 
14353. microphylla. 
14470. microphylla. 
14690. herniarioides. 
15541. rhombea. 
15559. lippioides. 
15949. castronis. 
16019. castronis. 
16020. vegasana. 
16025. vegasana. 
16043. vegasana. 
16054. lippioides. 
16082. vegasana. 
16093. dauciodora. 
16097. goudotiana. 
16126. castronis. 
16200. microphylla. 
16258. microphylla. 
16421. rhombea. 
16560. latifolia. 
16561. aff. smithii. 
16584. rhombea. 
16989. rhombea. 
16990. smithii. 
17014. alsinifolia. 
17025. rhombea. 
17090. rhombea. 
17188, smithii. 
18023. rhombea. 
18284. smithii. 
18797. smithii. 
18808. carnulosa. 
18830. dauciodora. 
18849. rhombea. 
18964. goudotiana. 
18968. vegasana. 
19021. aff. smithii. 
19032. latifolia. 
19097. alsinifolia. 
19119. alsinifolia. 
19138. goudotiana. 
19164. goudotiana. 
19201. goudotiana. 
19370- acuminata. 
19405. alsinifolia. 
19457. alsinifolia. 
19464. alsinifolia. 
19847. dauciodora. 
19969. losensis. 
20188. alsinifolia. 
20202. rhombea. 
20207. dauciodora. 
20370. losensis. 
20390. dauciodora. 
20403. rhombea. 
20669. dauciodora. 
20693. dauciodora. 
20800. involucrata. 
20804. hyalina. 
21601. eerpyllacea. 
22357. diversifolia. 
22439. dauciodora. 
22746. hyalina. 
23593. hyalina. 
526 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
24073. microphylla. 
24160. dauciodora. 
24274. nutans. 
24281. foliosa. 
24334. serpyllacea. 
24400. foliosa. 
24403. dauciodora. 
24457. macbridei. 
24676. hyalina. 
25329. microphylla. 
25580. hyalina. 
25638. costata. 
25775. multiflora. 
25789. nutana. 
25795. strigosa. 
25801. multiflora. 
25826. poeppigiana. 
25876. pichisana. 
25885. diversifolia. 
25895. nutans. 
25902. poeppigiana. 
25913. multiflora. 
25929. multiflora. 
26023. submissa. 
26032. margin at a. 
26038. imparifolia. 
27500. microphylla. 
28429. bassleriana. 
28467. bassleriana. 
28471. bassleriana. 
28835. strigosa. 
28843. strigosa. 
28993. bassleriana. 
29145. bassleriana. 
29196. bassleriana. 
29308. imparifolia. 
29515. imparifolia. 
29572. imparifolia. 
KLUO, G. 
1672. umbriana. 
1931. imparifolia. 
2870. bassleriana. 
3186. submissa. 
3719. microphylla. 
Kuntzb, O. 
1328. microphylla. 
1670. mollis. 
Lawbance, A. E. 
652. centradenioides. 
Lechlbr, W. 
409. elliptica. 
Lehmann, F. C. 
4475. cuprea. 
5411. serpyllacea. 
BT1258. discolor. 
K332. fallax. 
K333. involucrata. 
Linden, J. J. 
799. lindeniana. 
1206. mutisiana. 
Macbride, J. F. 
3126. minutiflora. 
3289. dombeyana. 
3512. serpyllacea. 
3650. ramosissima. 
3690. microphylla 
3770. poeppigiana. 
3868. serpyllacea. 
3984. diversifolia. 
4075. pavonii. 
4087. serpyllacea. 
4117. dauciodora. 
4395. nerteroides. 
4400. delicatula. 
5086. marginata. 
5179. macbridei. 
5201. verrucosa. 
5822. citriodora. 
5910. lamioides. 
Macbbidh, J. F., and 
Featbsrstonb, W. 
447. serpyllacea 
Mandon, G. 
1005. serpyllacea. 
1103 in part, dauciodora. 
1103 in part, filipes. 
1104 multiflora. 
1124. dauciodora. 
Mathswa, A. 
1555. hyalina. 
2032. hyalina. 
3101. microphylla. 
KILLIP—ANDEAN SPECIES OF PILEA 527 
Afaxfa, Y. 
6355. bassleriana 
6359. submissa. 
6360. bassleriana. 
6365. imparifolia. 
6881. trichosanthes. 
7177. hitchcockii. 
7178. trichosanthes. 
7211. trichosanthes. 
7215. pubescena. 
7307. submissa. 
7592. myrianthu. 
8476. pteropodon. 
MILLB, L. 
20. microphylla. 
93. microphylla. 
Mobitz, J, 
366. mollis. 
790. fendleri. 
1293. lindeniana. 
1294. rhombea. 
Mtjtis, J. C. 
1900. lindeniana. 
1908. aenea. 
1922. involucrata. 
1929. mutisiana. 
Pachano, A. 
3. serpyllacea. 
Pbarce, R. 
118. serpyllacea. 
284. epruceana. 
Pennell, F. W. 
1738. herniarioides. 
1863. lindeniana. 
2278. lindeniana. 
2731. involucrata. 
3164. mutisiana. 
3167. mutisiana. 
4416. pittieri. 
4502. trianaeana. 
4541. imparifolia. 
6944. fallax. 
7011. arguta. 
7559. fallax. 
8869. mutisiana, 
9299. mutisiana. 
9336. fallax. 
9354. salentana. 
9401. fallax. 
10325. tatamensis. 
10326. pennellii. 
10374. obetiaefolia. 
10376. fallax. 
10377. fallax. 
10378. tatamensis. 
10379. dauciodora. 
10380. purpurea. 
10450. ophioderma. 
10476. cuprea. 
12608. elliptica. 
12653. elliptica. 
13657. serpyllacea. 
14013. multiflora. 
14049. nutans. 
14751. lamioides. 
Pennell, F. W.f and Killip, E. P. 
5878. gallowayana. 
7336. fallax. 
7373. rojasiana. 
7375. fallax. 
Pennell, F. W., Killip, E. P., and 
Hazen, T. E. 
11887. involucrata. 
PIbkez A., E. 
351. microphylla. 
2374. involucrata. 
Philippi, R. A. 
28. elliptica. 
Pittieb, H. 
1216. lippioides. 
6379. pubescena. 
7145. nummularifolia. 
9551. microphylla. 
9585. mollis. 
10448. rhombea. 
11120. dauciodora. 
11127. rhombea. 
11863. involucrata. 
11972. microphylla. 
12166. hyalina. 
528 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
12417. involuerata. 
13898. crugeriana. 
13984. losensis. 
Poeppig, E. F. 
1032 in part, ceratocalyx. 
1032 in part, poeppigiana. 
1058. marginata. 
1383. fendleri. 
1539. hyalina. 
1539B. poeppigiana. 
1552 in part, fendleri. 
1552 in part, strigosa. 
1565. nutans. 
2088. marginata. 
3045. marginata. 
3046. ceratocalyx. 
Raiuondi, A. 
285. lamioides. 
2209. serpyllacea. 
2398. citriodora. 
2800. dauciodora. 
5639, serpyllacea. 
7092. ramoeissima. 
9290. nutans. 
9649. nutans. 
Heed, E. C. 
185. microphylla. 
706. pubescens. 
780. lindeniana. 
792. lindeniana. 
796. lindeniana. 
Rimbacb, A, 
136. serpyllacea. 
Rodriguez, S. 
36. lindeniana. 
ROBE, J. N. 
21946. nummularifolia. 
Ruiz H. 
4677. diversifolia. 
Rubby, H. H. 
1478. multiflora. 
1479. filipes. 
1480. cymbifolia. 
1481. cymbifolia. 
1482. cymbifolia. 
1483. dauciodora. 
1484. sublobata. 
1485. strigosa. 
1756. filipes. 
1774. rusbyi. 
2561. hyalina. 
RtjsbYj H. H., and Pennell, P. W. 
458. microphylla. 
553. rhombea. 
654. argentea. 
794. dauciodora. 
938. argentea. 
Schlim, L. 
701. latifolia. 
1134. nutans. 
Schunke, C. 
498. foliosa. 
678. foliosa. 
992. foliosa. 
Seemann, B. C. 
1099. centradenioides. 
Seifriz, W. 
317. microphylla. 
541a. microphylla. 
Smith, H. H. 
1223. fendleri. 
1430. apiculata. 
1445. involuerata. 
1446. rhombifolia. 
1447. hyalina. 
1448. hyalina. 
1460. microphylla. 
Sneidern, K. 
413. gallowayana. 
414. fallax. 
707. pteropodon. 
772. daguensis. 
773. galloway ana. 
788. pteropodon, 
862. pteropodon. 
KILLIP—ANDEAN SPECIES OF PILEA 
863. pteropodon. 
881. scandens. 
964. fallax. 
965. fallax. 
968. rhombea. 
975. gallowayana. 
993. gallowayana. 
1025. bassleriana. 
1210. puracensis. 
1396. rojasiana. 
1614. bassleriana. 
SODfROj A. 
153/17. microphylla. 
153/18. serpyllacea. 
153/19. serpyllacea. 
153/20. eerpyllacea. 
153/23. jamesomana. 
153/23b. jamesoniana. 
153/23c. serratifolia. 
153/24. attenuata. 
153/26. flexuosa. 
153/27c. myriantha, 
153/29. attenuata. 
153/31. hyalina. 
153/36. pubescens. 
I53/52, arguta. 
153/52b. arguta. 
SPBUCK, R. 
4028. microphylla. 
4155. submissa. 
4376. spruceana. 
4434. imparifolia. 
4455. pubescens. 
6047. jamesoniana. 
6106 in part, fallax. 
6106 in part, jamesoniana. 
6107. fallax. 
Stein bach, J. 
5028. nutans. 
5709. multiflora. 
5812. multiflora. 
8542. multiflora. 
8890. nutans. 
8974. dauciodora. 
9153. dauciodora. 
Stevens, F. L. 
59. pubescens. 
ST# BEL, A. 
90e. involucrata. 
362b. fallax. 
432. serpyllacea. 
Tath, G. H. H. 
184. sublobata. 
187. tatei. 
188. tatei. 
190. tatei. 
351. microphylla. 
585. tungurahuae. 
643. serpyllacea. 
665. tetrapoda. 
Tessmann, G. 
3721. imparifolia. 
4603. bassleriana. 
4667. bassleriana. 
4742. microphylla. 
Toko, R. A. 
624. involucrata. 
885. antioquiensis. 
949. tatamensis. 
969. dauciodora. 
1049. dauciodora* 
1077. hyalina. 
Triana, J. 
236. lindeniana. 
344. mutisiana. 
345. carnulosa. 
492. nutans. 
876. pubescens 
877. lindeniana. 
878. hyalina, 
886. fasciata 
887. centradenioides. 
888. seemannii. 
889. daguensis. 
890. salentana. 
891. gallowayana. 
892. pteropodon. 
898. serpyllacea. 
899. serpyllacea. 
530 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Troll, C. 
3737. lindeniana. 
3738. goudotiana. 
ULE, E. 
6508. marginata. 
0588. subamplexicaulis. 
6657 microphylla. 
6843. spruceana. 
6844. poeppigiana. 
Weberbauer, A. 
158. serpyllacea. 
575. mtnutiflora. 
753. dauciodora. 
1594. lamioides. 
1776a. citriodora. 
2022. weberbaueri, 
2023. pusilla. 
2027. minutiflora. 
3872. nitida. 
4054. serpyllacea. 
4307. punctata. 
4387. suffruticosa. 
4892. serpyllacea 
5244. nitida. 
6812. mul ti flora. 
Weddell, H. A. 
4184. multiflora. 
4561. dauciodora. 
* 
Werdermann, E. 
1954. elliptica. 
Wbbt, J. 
8035. nutans. 
Williams, L. 
1917. nummularifolia. 
4082. microphylla. 
6071. microphylla. 
6662. microphylla. 
6957. pubescens. 
7149, hyalina. 
7233. microphylla. 
7425. subamplexicaulis. 
7695. pubescena. 
Williams, R. 3. 
199. spruceana. 
INDEX 
[Spanynu In Italics. Pkge numbers of principal entries In boldface type] 
Fag# 
Accolcarpa     480 
Adicea  476 
Capitell&tae   499, £07 
Centrodenloideae.    489 
Cbla-chia     487 
Dauciodorae   494 
Diversifollae—  486,486*487 
Estrella caracha   489 
Fallaces  4% 484 
Flexuosae  493 
Guaina    601 
Imparifollae   487 
Kkuru-qulsa    480 
Lamium purpureum.*...  494 
MeJlahuvilu   501 
M icropbyllae     477 
MoUes    509 
Multlflorae   501 
Parietaria microphftta   477 
serpvUifolia  479 
Parletariae***   480 
Piles -  476 
acumlnata   513,615 
aenea  483 
alstrdfolia  482 
angustata   483 
anomala  508,609 
antfoquiensis*    503 
apiculata - 503 
argentea     482 
arguta    518 
attenuate *  504 
bassteriaaa   488*489 
buchttonll  503 
caiiitrichoidc&^-^-    477 
capitellata 493*499 
carnulosa *    501 
castronis   520 
centradenloides      489 
oeratoealyi  514 
thiltnti*  400 
d* T$&o*plcnioide* *   513,514 
citrlodora  506,507 
cordijotfa   480 
costata   -  490 
crugerlaaa 491,502 
cuprea   . . 499 
cu&biensfs-    476,520 
cymblfolia   _ 493,499 
daguenals  488 
dauciodora    496,496,4% 
var. crenata  497,498 
var, Jameson ianQ  498 
vai\ pilosula  497,498 
var. unddtm    496 
Page 
Plica delicatula., _   495 
dertdrophiia 475,488 
var, major  488 
discolor.    499 
djversifolia .    478,487 
dombsyana    494 
elegan*   500 
elliptlca  496,501 
var- gQfam .   500 
fallax 48% 510 
var-     485 
fascia ta 517,518 
fendterL. —_  476,497 
filicina   487,489 
flJipes —   498 
flexuosa     493*502 
foliosa  478 
forpeti     510 
gallowayana  511 
glaucophy 1 Ia_ ^    519 
Qtobosa   478; 479 
goudotfana   - 506 
grandit var.r triptinervia 511,512 
haertkel       492 
haztni     493 
herniarioides    478,480 
herrtras-  486 
hltcbcocklL.-,,  483 
hirsute 518,519 
hyaline   475,515 
var. ton$ipet .......  515 
hydrocotyllflora  492 
lmparlfolla    488 
Involucrata 51% 513; 515 
jamesonlana  496,498 
lamioidea-  4M 
latifolla    511 
Uptophltto— -  475,497 
lindeni&na     481 
lindtnii  481 
llpploides   483 
loseosis   506 
macbrldel    500 
macron tba   .. 492 
xnacrocystollthica  492 
macrophptta     475,509 
margtnata   492; 502 
malaalomoldes-  504,505 
microphylla  475,477,479,480 
vbt ♦ htrttiariobies-  480 
minatiflora  499 
moll is   509 
mmtana 514 
mutbiana  504,505,506,508,519 
VII 
VIII INDEX 
Page 
PUea multiflora- 604,505,507,508 
muzcota  -  477 
var. herniarloidts   480 
myrlantha  505 
myriophylla  48T 
nerteroldes    480 
nftlda - -  480 
nuxnmularlfolla   498,512 
var.khigM  513 
nutans      486,491 
obatiaefolia -    483 
ophioderma*  - 517 
orbicuiata  494 
omatijoiia -  490 
OM/il.. -  513,514 
parietarfa  481,842 
paucteerrata  484 
pavonll   -  518 
pedunculate    496 
pennellil - -  MO 
ptehisana-*  491 
plcta *     476,507,509 
pi ttieri   -  510 
poeppiglana    475,507 
pteropodon   501 
pubescens -   475*514 
var, iiwolucrata  513 
var, montana    514 
pulegt folia  487 
punctate ,  — 504,519 
puraoenrfs - — - 503 
purpurea  . . 519 
pusilla.^  495 
ramosisalma -  487 
repens  495 
var, ttrigoza   405 
rhombea..*.   481,482 
romblfolia   ^  500 
riparla —  504 
rojadfana  . * *  488,491 
rusbyi  — , ., 502 
salentana -   519 
scand^a    491 
seemannil   490 
serpyllacea^-,-  — 478 
serpyllifolla     479 
aerratlfolia-  494 
amlthlL**  502 
fpruceana,    512,514,515 
strlgosa—  495 
Pag# 
Fllea subamplexicaulis  504 
mbcrenatQ   478,479 
sublobata  484 
submbsa  510 
suburrata 504,505 
rucettUnia.,-*    509 
suflrutieosa   506 
tarmtruts -  607 
tatamensis   510 
tatei   482 
thpmijolia.^   478,479 
trlanaeana  489 
trlchosanthes    484 
triradiata    49% 502 
tungurahuae  500 
uiiirinota  496 
umbrlana.. — 507,508 
uncidcns   496,497 
uttrijolia   __  493 
urtlcella   494 
tariigata   460 
vegasana   - 485 
vermcosa^ *  503 
Pubescentes  512 
Qtiisa,   480,487 
Urtica argtUa    510 
arvemis   515 
callUrichotdtB— 477 
cpTiuxa * ... 518 
dichroa  497,498 
flortbuvda—*   505 
hemiQrioldtB^.  _ 480 
hirtuta  * 518,519 
invotucrala 513,514 
UmoniodQTa  506 
marginata   502 
metostomcideB   504,505 
muUtflora,-    504,505,508 
muOsiana^  504,505 
nufnmularijolia    512 
nvtam    —  486 
pultgijoliti,.,*   ...  487 
punctata  504,51& 519 
rhombea   ...   481 
rtwfrff  502 
icrpvltacea.*—  478,479 
thvmljoifa    478,479 
urens    494 
Y ti nca-quisa.  *  487 
O 
CONTR. NAT. HERB., VOL. 26 PLATE 30 
Pi LEA FOLIOSA KILUP. 
CONTR NAT. HERB . VOL. 26 PLATE 31 
r 
y- / 
UNiTIO 1T1TT* hiTIONU MUttt 
LXrLORATION IN COIXJMB 
t'OKlJC 1 + V4 
Ikrpl, \kinHj «f iVi W|ti; *lt_ l.h 
U ''I • * l" *!l[ir UwkWLf, 
MmmMt V JiMtTH/ * 
PILEA VEGASANA KlLLIP. 
CONTR, NAT. HERB., VOL. 26 PLATE 32 
Pi LEA M YRIOPHYLLA KlLLlP, 
CONTR. NAT. HERB. VOL. 26 PLATE 33 
PlLEA WEBERBAUERI KlLLIP. 
CONTR. NAT. HERB., VOL 26 PLATE 34 
P] LEA DAGUENSIS KlLLIP. 
CONTR. NAT HERB.. VOL. 26 PLATE 35 
PlLEA SCANDENS KlLLIP. 
CONTR. NAT. HERB., VOL. 26 PLATE 36 
1 T1 
UMJTCO BTATCS NATION* 
EXPLORATION IN 
tJUTEJtN OQRM 
Pi LEA SMITHII KlLLlP. 
CCNTR. NAT. HERB.. VOL. 26 PLATE 37 
PlLEA TRIRADIATA KlLLlP. 
CONTR. NAT. HERB., VOL. 26 
PLATE 38 
PlLEA ANTiOQU IENSIS KILL.IP- 
CONTR. NAT. HERB., VOL. 26 
PlLEA ATTEND AT A KlLLIP, 
CONTR. NAT HERB., VOL, 26 PLATE 40 
i 
j f 
I 
t tin K»* .WDRh, 
t AMERTCit ^OUTNOCTULIS 
tq 
pji r a 
PlLEA GLAUCOPHYLLA KlLLIP. 
INDEX 
[Synonyms in italics. Page numbers of principal entries in boldface.} 
Page 
Accoicarpa.  480 
Acidodontium floresianum  78 
megalocarpum  78 
Acmclla  2,30 
brasiliensis  250 
kirla  241 
Acrophorus stipellatus  273 
Acroporium pungens  109 
Acrostichum appendiculatum  291 
marginatum  327 
sincnse  292 
yunnanense  327 
Actinomeris stricta  256 
tetraptera  257 
Adelothecium bogotense  99 
Adenostemma triangvlare  230 
viscosum triangulare  230 
Adiantum capillus veneris  310 
cau datum — 310 
davidi  310 
prattii   310 
delavayi  310 
edentulum  — 310 
edgeworthii  310 
lunulalum  310 
myriosorum   310 
pedatum glaucinum  310 
philippense  310 
prattii  310 
venustum _  310 
wattii  310 
Adieea  476 
Aganippe a   249 
belli diflora   249 
dentaia  249 
Ageratum angustifoHum  258 
Aldama  245 
montanoa   245 
Alloplectus  390 
bicolor  473 
coccineus  473 
congestifiorus  473 
cristatus  473 
dicbrus    473 
hispidus  473 
sanguincus  474 
ALsophila cost ularis   272 
glabra.  272 
cav aleriana  273 
glauca    273 
henryi  273 
khasyana  273 
228317—40 35 
Fafr 
Amaranthus spinosus  22S 
Amblystegiaceae  106 
Ambrosia arborescens  239 
frutescens  239 
A mellus discodeua  254 
Amphicosmia, section of Hemitc- 
lia   272 
Anaitis   227, 241 
acapuleensis  241 
Anapausia, section of Lepto- 
chilus  290, 291 
Andreaea turgescens  56 
Andreaeaceae  56 
Anetanthus  402 
Angiopteris caudatiformis  271 
helferiana  329 
Anoectangium eucblorum  74 
Anomobryvim costaricense 52, 78 
filiforme  78 
Antrophyum coriaceum 313, 314 
henryi    313 
latifolium  314 
obovatura  314 
parvulum  313 
petiolatum  314 
reticulatum  314 
parvula—   313 
stenopbyllum  313, 314 
vittarioides 313, 314 
major  314 
Aongstroemia jamaiccnsis  57 
Archibaccharis  236 
mucronala_ ,   236 
serratifolia  236 
Artantke calocoma  26 
crassispicatd-   24 
imperialis  40 
obtusa  118 
seemanniana   40 
septuplinervia  33 
tricuspis  25 
trinervia  29 
Aschenbomia  227, 258 
keteropodii 258, 259 
Aspidium angulare .  286 
aristatum  283 
assamicum  282 
atratum _  278 
biaristatum  287, 288 
caducum  289 
carvifolium   283 
earyotidevm .  289 
£31 
532 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Page 
Aspidium ciliatum  274 
coadun alum  331 
coniifolium  282, 283 
fructuosum   281 
fuscipes  290 
heterocarpum  289 
hirtipes  278 
Hid folium  285 
lamprocavlon    273 
lunanense  279 
manmeien&e  284 
obscurum   290 
paleaceum  280 
parallelogram-mum,  280 
patentissimum  280 
pennigerum. -  277 
pycnopteroides  278, 279 
spectabile  276 
xUmtilans   285 
subsageniaeeum  290 
variolosum  289 
varium fructuosum  281 
yvnnanense  279 
Aspilia  251, 252 
bupkthalmiflora  251, 252 
ecliptaefolia  250 
kunthiana...  251 
montevidensis   251,252 
nigropunctata - 252 
verbesinoidea  252 
wedelioides  - - 252 
Asplenium atkinsoni anderBoni__ 300 
bellum  301 
bulbiferum  306 
bullatum  306 
cavalerianum   306 
cheilosorum  305 
clarkei   299 
CTinicavtle  306 
diver si folium   303 
ensi forme  266, 305,332 
frondosum  304 
gracile  209 
grandifrons   300 
laciniatum  305, 306 
las treoides  300 
latecuneatum  306 
latifolium  302, 303 
frondosa  304 
japonicum  302 
leptopyhllum  303 
mackinnoni  300 
maximum  302, 303, 304 
monanthemoides — 305 
nidus  305,332 
phyllitidis  305 
normale..  305 
minus  305 
obacurum  305 
otophorum  298 
pinnatifido-pinnatum  301 
planicaule  305,306, 332 
polymorphum  303 
polyirichum   306 
rockii  332 
sikkimense  304 
Pag* 
Asplenium sinense  298 
stereophyllum  333 
trigillsosum^  299 
succulentum  304 
ienellum  299 
ienuifrons IV, 299 
torrentium  303 
trichomanes  305 
unilaterale  305 
r&h&oense  305 
yunnanense  306 
Aster ehrenbergii  234, 235 
lima  234 
limae  235 
Undenii  234, 235 
moranensis  234 
purpvrascens  234, 235 
riparius  235 
eonorae  235 
Athyrium acrostichoides. 296,297, 301 
anisopteron  297, 298 
atkinsoni  300 
andersoni  300, 301 
clarkei  299 
membranacea  299 
dissitifolium  296, 332 
drepanopterum  300 
funebre  300 
kulhai tense  296 
falcatum--  297 
fallaciosum  297 
filix-femina  299,300 
flabellata  300 
retusa  300 
fimbriatum  301 
foliolosum  300 
lastreoides  300, 301 
mackinnoni  300 
macrocarpum  297, 298, 300 
atkinsoni  298 
mengiteense  298 
monticola  300 
muticum  298 
nephrodioides  297 
nigripes  298, 299,300 
otophorum  298 
pettolosum  299 
roseum  298 
rupicola , 296 
eetiferum  299 
sinense  298 
strigillosum.  299 
supraspinescens  297 
tenuifrons  iv, 299 
umbrosum  301 
violascens  298 
viviparum  299 
wardii   298 
elongatum  298 
,\ulacomniaceae  79 
Axiniphyllum scabrum -  248 
tomentosum  248 
Baceharis.^  232 
adnata  237 
alamani  235 
blanchetiana  263 
INDEX 533 
Page 
Baccharis coerulescens  235 
congesta  235, 236 
comanguinea  235, 236 
douglasii  236 
glutinosa  235 
haenkei  236 
longifolia  235 
micrantka   236 
mucronata  236 
■phylicaeformis  232 
pilularis 235, 236 
piarmicaefolia  236 
seemanni  236 
scrratifolia   236 
squarrosa  236 
gulcata  236 
thesioides  236 
viscosa  235 
Bahia angustifolia  258 
resinosa  232 
Baillieria barbasco  238 
sylvestris  238 
Balbisia canescens  261 
Baltimore ovata  238, 239 
recta  238, 239 
ecolospermum  238 
panamensis  238 
Barbella tenuissima  95 
Barbula bescherellei stenocarpa _ 75 
Bartramia defoliata 51, 80 
Bartramiaceae  80 
Besleria  404 
aero pod a  403, 415, 463 
acutifolia  418 
affinis   404, 410, 435,436 
aggregata  472 
amabilis  403,407, 411, 440 
ampla  473 
angustiflora  406, 421 
anomala 417, 471 
arborea  473 
ardens  472 
aurantiaca  457 
barbata  408, 429 
barbensis  403, 416, 465 
berteriana  457 
Tricolor  473 
biflora  473 
bivalvis  473 
boliviana  409, 432 
bonodora  473 
caerulea  473 
calcarata 404, 417, 467 
calceolus   417,462,468 
campanulata  72 
capitata 412, 450 
ceslroides  473 
chiapensis  453, 454 
cinnabarina  409, 433 
citrina 412, 445 
clivorum 410, 438 
eoeeinea  473 
cognata  398, 405, 423 
columbiana.  415, 462 
arguta 415, 462 
Paga 
Besleria columneoides  403, 411, 443 
comosa  401,411,441 
compta  412,449 
concolor 410, 439 
congesiijlora    473 
connata  409, 436 
conspecta  403, 406, 424 
corallina  415, 459,472 
corallinoides 415, 459 
coriacea  427 
costaricensis  418,428 
crassa  398,417,466 
crassifolia  473 
crenata 415, 460 
cristata  396, 473 
cuneata 412, 446 
cymosa  473 
cyrtanthemum. _ 400, 403, 411,443 
debilis 53 
decipiens 410, 438 
deflexa   403, 411, 442 
delvillari  406, 419 
densiflora  407, 423 
dichrns  473 
disgrega 412, 447 
divaricata 413, 453 
drymonia  473 
ecuadorensis 417, 471 
elegans 410, 439 
elongata  403,412,413,454 
fasciculata 412,447 
fecunda  408, 409, 430 
filipes   403,408,425 
f. glaberrima..   408, 426 
f. latior  408, 426 
f. pilicaulis  408, 426 
flava   403,416,463 
flavo-virens  473 
floribunda 414, 458 
foliacea  473 
form oga  399, 
403, 406, 410, 425, 441 
furva 412, 447 
geminifiora  446 
gibbosa 416, 463 
glabra  403, 405, 424 
gracilcnta  397, 406, 421 
grandifiora  473 
grandifolia  409, 413, 455 
guaddlupenHs  473 
herbacea 416, 464 
heterosepala  398, 400, 413, 456 
hirsuta  403, 408, 430, 431, 443 
hirtella   473 
hispidn  473 
ignea  404, 411, 444 
loreteusis 411,444 
mcxiae 411,444 
semianiralaris 411, 444 
illustris   407, 408, 428 
imberbis  408, 430 
imbricans  403, 415, 461 
uncinata 415, 461 
immitis  404,411, 412,449 
534 CONTRIBUTIONS FROM TIIE NATIONAL HERBARIUM 
Page 
Besleria impress*  398,412,448 
imrayi  457 
incarnaia  473 
inodora  473 
insignis  474 
insolita 414, 458 
kalbreyeri 410, 437 
labiosa  398, 416, 417, 467 
laeta—    408,432,443 
lanceolata _ 403, 408, 427 
lateralis 417, 469 
laxiflora  403, 409, 413, 453 
lehmamiii  406, 419 
leucocarpa  407, 422 
leucostoma   398, 409, 433 
longipedunculata 413, 457 
longipes  398, 404, 417, 466 
lucida  410, 435 
lutca L  396, 
403, 404, 405, 414, 457 
alpestris  457 
brevipes   457 
imrayi 398, 457 
intermedia  457 
leucantha  457 
vincentina  457 
vulgaris  457 
lutea Moo. & Sess6  474 
luieo-virens  473 
macropoda  403, 413, 454 
maxima  397, 401, 408, 429 
melancholica  412, 446 
melittifolia  396, 474 
mcmbranacea  412,445 
meridionals 412, 446 
microphylla   407,419 
serrulata  407, 420 
miniata  407, 416, 420 
minutiflora 410, 437 
mirifica 411, 442 
modica  407, 419 
mollis  474 
mollissima  474 
montana  409, 432,433 
mucronatft 410, 437 
nemorosa  407, 411, 422 
nitens   406, 425 
notabilis  403, 406, 427,429 
nubigena  407, 425 
oncogastra 417, 469 
ovalifolia   413,451 
pallidiflora 410, 439 
panamensis  403, 415. 4G9 
pansamalana  397, 
400, 403, 417, 471, 472 
ecuadorensin  471 
patrisii   413,452 
panciflora  403, 404, 413, 451 
uniflora 412, 452 
pendula _ 400, 414, 458 
penduliflora  414, 458 
pennellii  407, 421 
pentapkylla  474 
perennis  398, 417, 470 
Pag* 
Besleria peruviana 413, 452 
dissimilis 411, 452 
occulta 413, 452 
petiolaris  403,411,444 
princeps  399, 403, 416, 465 
pulchella  474 
pycnosuzygia  400, 403, 407, 423 
quitensis  417, 467, 468 
racemosa  399,413, 450, 451 
resupinata  474 
reticulata  397, 398, 409, 434 
pubistyla ■ 409, 434 
venosa  406, 409, 434 
rhytidophyllum  399, 413, 456 
riedeliana   446 
riparia 412, 448 
robueta  397, 403, 411, 428, 445 
rotundifolia 410, 439 
rupest ris  404, 415, 462 
salicifolia  397, 416, 465 
sanguinea  474 
saxicola  408, 431 
seitzii  404, 416, 466 
selloana 410, 413, 455 
serrulata  474 
sieberiana  404, 408, 426 
sodiroana  467 
solanoides  403, 
404, 405, 406, 418,428 
parvifolia  406, 419 
ten era  407, 418 
spectabilis .  474 
aprncei  409, 434,450 
standleyi  403, 406, 427 
strigi!losa_,  404, 405, 428 
subcarnosa 413, 456 
surinamensis  474 
sylvarum 415, 459 
symphytum  — 412,446 
tambensis  397, 407, 428 
lenuifolia  453 
tetrangularis 410, 438 
timida 417, 468 
tincta  418, 470 
trichiata  413, 450, 451 
trichostegia  403, 408, 432 
triflora  403, 404, 411, 440,441 
australis   407, 411, 441 
subeorymbosa  440 
tuberculata   411, 443 
uleana  434 
umbrosa  413, 455, 456 
variabilis^  397, 398, 409, 435 
f. barbattila 410, 436 
f. pallida 410, 436 
venusta  417,468 
verecunda   413,453 
iterruco&a  474 
vestita  408, 431 
villosa  408, 431 
violacea   474 
wendlandiana  403, 415, 461 
Blechnum orientale  306, 333 
Blennosperma califomicurn  262 
nauum   262 
INDEX 535 
Page 
Bolbitis  290, 291 
Botrychium lanuginosum  271 
Brachymenium capillare  76 
spathulifolium  76 
standleyi 52, 77 
eystylium  76 
viviparum 52. 77 
Brackyris neacana  231 
panicutata  232 
Brachytheciaceae  106 
Brachythecium costaricense  106 
Brainca insignia  306, 333 
Breutelia brittoniae  80 
chrysea 51, 80 
tome nt os a  80 
Brotera Irinervata  238 
Broteroa irinervata  238 
Brotherella delicatula  108 
mi n u tula 52,108 
recur vans  108 
Brownea 1 
Brunfelsia bonodora  473 
Bryaceae  76 
Bryum argenteum  78 
lanatum  79 
ery thro neuron  79 
rosulicoma  79 
sordiduxn  79 
Buphthalmum ketrophyllum  250 
strigosum  250 
Calcitrapa patibilcensis  263 
Calea   261 
angusta  258 
ang us tifolia  258 
brevipes  258 
coriacea  258 
leptocephala  258 
liebmannii  258 
multuplinervia  258 
robusta  258 
sabazioideS-   260,261 
sessiliflora  258 
verbenaefolia  255 
zacate chichi  258, 259 
Calendula americana  240 
Callicostella oerstediana  100 
pall id a  100 
CaJymperaceae  72 
Calyptocarpua vial is  257 
wendlandii  257 
Calyptothecium duplicatum  96 
tiirgescens  96 
Calyptrocarpus  257 
Oampanea grandiEora  473 
Camp him „  291 
angustipinnum  292 
costatum-  331 
cuspidatum  292 
sect. Heteroneuron  325 
gin en so  292 
Campylopus arctocarpus  65 
atratus 52, 61 
chrismari  59 
costaricensis 52, 62 
erectus   63 
Page 
Campylopus falcatulus 52,64 
filifolius  63 
flexuosus  59 
harrisi  64 
longifolius  64 
hellerianus 60,61 
hoffmannii  59 
introflexus  61 
key to species 58, 59 
leptodus  62 
porphyreodictos  63 
roellii  60 
staudleyi  52,59, 60 
lutescens 52, 60 
stramimfolius 52, 63 
subleucogaster 59,64 
Cariniana  2 
Catharinaea hirtella  113 
oerstediana  113 
polycarpa.   113 
Centaurea americana  263 
melitensis  263 
patibUcemia  263 
Centrolobium 1 
Ceratodon stenocarpus  57 
Ceterach dalhouaiae  306 
Ckaetantkera  234 
asteroides  234 
Chaeta phora  234 
asteroides . „ „  234 
Chaetephora  234 
Chaetopappa   233, 234 
asteroides  233 
imberbis.    233 
parryi  234 
Chaetophora  234 
Cheilanthes albofusca  308 
albomarginata  309 
bonatiana  308 
dubia  309 
farinose  308 
dalhousiae  308 
henryi   308 
leveillei  308 
mairei  308 
patula  309 
rufa  308 
subrufa  308 
subvilloaa  309 
taliensis  308 
yunnanensis  309 
dilatata  309 
Chia-chia  487 
Chrysanthemum nanum  262 
Chrysopsis scabra _  261 
Chryxospkaerium gnaphalioides, _ 258 
Cibotium assamicum  273 
barometz  273 
Clibadium sylvestre  238 
vargasii  238 
Coco de mono  8 
Coco zapote  8 
Coelertina  258 
Collandra petiolaris  444 
Columnea  401 
536 CONTBIBUTIOlSrS FROM THE NATIONAL HERBARIUM 
Page 
Coniogramme fraxinea  307 
intermedia  307 
procera  307 
spinulosa  307 
Coniothele calif or ntca  262 
Conyza adnata  237 
apurensis  235 
coriesii  236, 237 
odorata  236 
mlicifolia  237 
acandens  229 
8tellata  22S 
tomentosa  228 
tortuosa  229 
Coreopsis alata  256 
heierophylla  249 
Couroupita darienensis  7 
nicaraguensis  1, 7 
odoratissima  1,6 
peruviana  7 
Cremosperma  402 
cestroides  473 
cinnabarinum  402, 433 
Cryphea nitidula  00 
Crypheaceae  90 
CryptogTamma brunoniana  309 
Ctenitis, subgenus of Dryopteris _ 291 
Curanga bivalvis  473 
Cyathea brunoniana  272 
spinulosa  272 
Cyatheaceae  272 
Cyclodictyon albicans  100 
brittonae  52, 98,100 
humectatum  100 
key to species  100 
rubrisetum 51,100 
Cyclophorus beddomeanus  326 
drakeanus  326 
flocculosus  326 
gralla  326 
heteractis  326 
minor  335 
inaegualis  326 
lingua  326 
nudus   326 
pekinensis  326 
shearer!  326 
sticticus   326 
Cyrtandra  402 
biflora  473 
cymosa  473 
Cyrtanihemum  396, 404 
defiexum  442 
hirsulum  443 
Cyrtogonium  291 
Cyrtomium caryotideum  289 
hookcrianum  289 
Cy stopteris grandis   300 
setosa  273 
Daltonia aristifolia 52, 99 
longifolia  99 
lorifolia  99 
splachnoides    99 
stenophylla  99 
D avail La athamantica  294 
Pace 
Davallia athyriifolia  300 
bullata  294 
calvescens  294 
clarkei   294 
faberiana  294 
dareaeformis  294 
grijfithiana  293 
henry ana  293 
perdurans  294 
platylepis  293 
pseudocy stopteris  294 
rhomboidea  295 
Delilea    237 
Delilia   237 
berterii  237 
biflora  237 
Denekia  230 
capensis  230 
Dennstaedtia scabra ... 295 
Diacalpe  289 
aspidioides  273 
Dicranaceae  57 
Dicranella herminieri  57 
heteromalla 52, 57 
hilariana  57 
perrottetii  58 
rufescens 52, 57 
standleyi 52, 57 
Dicranodontium denudatum  66 
meridionale 52, 65 
Dicranoloma brittonae 52, 69 
setaceum 52, 70 
Dicranopteris linearis  271,330 
Dicranum frigidum  68 
THdymoglosa urn latealalutn  330 
Diplazium ambiguum  301 
asp e rum  304 
ccuogramma  303 
cavalerii  302 
dilatatutn  301, 302, 303, 304 
diversifolium  303 
latifolium  303 
esculentutn  302, 305 
expansum  301 
flaccidum  302, 304 
frondosum  304 
japonicum  301 
latifolium   303 
leptophyllum  302, 303 
lobbianum  301 
maximum  302 
orientale  302, 304 
pinnatifido-pinnatum  301 
polypodioides  302, 303, 304,305 
henry i  303 
vestitum  304 
siainense  332 
sikkimense  302, 303, 304 
squamigerum  302, 304 
taquetii  302 
veitchii -  302, 332 
virescens -  302 
viridissimum  302, 304 
Diplostelma  234 
bellioides  234 
Distasis  234 
INDEX 537 
Page 
Distasis asterodes  234 
asteroides  234 
heterophylla _ 233 
modesta  234 
parry i  234 
Ditrichaceae   57 
Doryopteris ludens.  333 
Drymoglossum carno&um  314 
Drymonia calcarata  473 
seirulata  474 
Bpectabillis  474 
Drymotaenium  312 
miyoshianum  314 
Drynaria coronans  327 
delavayi  326 
esquirolii  327 
propinqua  326, 327, 334 
quercifolia   335 
sparsisora   327 
Dryopteris adenorackis  281 
africana  276 
apicidens  296 
apiciflora   279, 280 
aristata  282 
austrosinensis  290 
barbigera   282 
basisora  281 
blepharolepis  281 
braineoides  275 
calcarata   274 
sericea  274 
carvi folia  282,283 
cavalerii  281 
chrysocoma    281 
clarkei   279 
cnemidaria  276 
cochleata  281 
crinipes  276 
cuspidata  278 
cylindrothrix  330 
decursivepinnata  276 
dickinsiL_  279 
diffracta  283 
dissecta  290 
dissitifolta  296 
effusa  283 
erubescens  275 
erythrosora. _ „ , ,  282,288 
falciloba  274 
fargesii  283 
filix-mas  280 
fibrillosa  279 
flaccida   274 
fructuosa    281 
gamblei  279 
gracilcsccns  274 
heleopteroides  281 
henry i  282,283 
hirtipes  276, 278, 279, 330 
atrata  278, 279 
stenolepis  279 
hirtisora.  -  277,330 
incrassata  296 
j uxtaposila    281 
Page 
Dryopteris khasiana   276 
lamprocaulis  273 
lofouensis  275, 290 
margin ata    281 
megaphylla   277 
metteniana  275 
microthecia   275 
miqueliana  283 
molliuscula  276 
moulmeinensis  278, 330 
ochthodes  274, 275 
odontoloma  281 
ornata  276 
paleacea  280 
khasiana  280 
paras itic a   276 
penangiana  276 
peregrina    279 
procurrens_  330 
prolifera   276 
pteroides   330 
Bagenioides  290, 330 
eikkimensis  282 
eparsa  282, 288 
speciosa  282 
assamica  282 
splendens  282 
stenolepis  279 
subelata  276,277 
subg. Ctenitis   291 
Eudryopteris  276, 278 
Meniscium  291 
Polystichopsis  282, 291 
gublacera  281 
subsageniacea  290 
subtrangularis  282 
syrmatica  275, 276 
petiolosa  275 
thibetica__   279 
truncata  277 
tuberoulifera  275 
urophylla  278 
xy lodes  274,275 
Dunantia microcephala  248 
Echinacea dicksond  249 
Echinoeephalum  254 
discoideum  254 
Eclipta alba  241 
betlidioides   242 
elliptica  242 
erecta  241 
humilis  249 
lanceolata   242 
megapotamica   242 
pusitta  254 
Ectropothecium apiculatum  111 
costaricense  111 
Egenolfia    290, 291 
appendiculata  292 
subintegra,..,  291 
helferiana   292 
sinensis  292 
EJaphoglossum conforme  327,335 
fusco-punctatum  327 
538 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Page 
Elaphoglossum petiolatum  327 
yunnanense  327,335 
Elephantopus carolinianus  229, 230 
Elvira..  237 
bifiora  237 
martyni—  237 
Enckea smilacif olia   133 
Entodon aurescens  107 
bernoullii  107 
jamesoni  107 
Entodontaceae  107 
Epipterygium immarginatum— 76 
Episeia   396, 402 
melittifrtlia  474 
guadalupensis. — 473 
Equisetum arvense   327 
ramosissimum  - 327 
Eremosis purpurascens  229 
tarchonanthifolia „ - 229 
tomcnlosa  229 
Erigeron apurensis  235 
chinensis _______  235 
spathulatus    235 
Eriocoma arborescens  244 
clematidea  247 
crenata    245 
gracilis  246 
hibiscf.folia   245 
karwinskyi  246 
mollissima  246 
vioritziana  247 
olivae  246 
triloba  247 
uncinata  244 
xanthiifolia   247 
Eriphia  404 
jamaicensis  457 
lutea    457 
pallida  457 
Erythrodontium densum  107 
M longisctum  107 
Eschweilcra  4, 11 
calyculata   1,13 
collinsii. _ -  1,13 
garagarae  12 
panamensis  12 
revcrsa   11 
verrucosa   14 
verruculosa  13 
Estrella caracha   489 
Eubesleria  396, 401, 404, 405 
Eu campy lopus, section 58, 62 
En cat-agon ium politum 51, 96 
Eurhynchium exasperatum  107 
Euxenia radiata  248, 249 
Feaea  231 
Hnearia  231 
plantnginea  231 
Feaclla  231 
plantaginea   231 
Feea  231 
plantaginea  231 
Fissidens asplenioides  56 
flcxinervis 51, 57 
Pagt 
Fissidens oerstedianus  57 
polypodioides  57 
tor til is  56 
Fissidentaceae  56 
Flaveria trinervia  238 
Fraaseria arborescens  239 
arteraisioides   239 
fruticosa   239 
Funaria bonplandii 51, 76 
calvescens   76 
epipedostegia  76 
longiseta  76 
Fimariaceae  76 
Galinsoga oblongifolia  241 
resinosa  232 
Galinsogea angusiifolia  258 
resinosa  232 
Gasteranlhopsis  396, 404 
alabra  424 
kirsuta  430 
Gasteranthus  396, 398, 400, 401 
403, 404, 405, 417, 456, 473 
pilosus   467 
quitensis  468 
Gleicheniaceae  271, 330 
Glossadelphua lingulatus  110 
longisetus   52,109, 110 
truncatulus 51,109,110 
Goniophlebium, subgenus of 
Polypodium  315 
Goniostoma, section  81 
Grammitis decurrens  324 
involuta  325 
scolopendrina  325 
Grias fendleri   1,2 
Grimraiaceae  75 
Grypocarpha  240 
hebeclada  240 
liebmannii  240 
nelsonii  241 
Guaina  501 
Guizotia  243 
di&coidea  243 
Gustavia brachycarpa_  3 
nana  6 
pleuroearpa  4 
pterocarpa 4 
superba  1, 4 
Gutierrezia glutinosa  232 
linearifolia  232 
neaeana  231, 232 
pameulata  232 
resinosa  232 
Gymnogramme dclavayi  307 
gig ante a  303 
peniaphylla  324 
salicifolia  324 
Gymnoloma maculatvm  248 
Gymnolomia   249 
cinerascens  249 
connalum  238 
kunthiana   251 
Gymnop&is  249 
euxenioides _  24 8 
INDEX 539 
Page 
Gymnopsis kunthiana  251 
xvedelioides   252 
Gymnoptcris 290, 291 
contaminana  292 
delavayi-  307 
vestita  307 
Gymnosperma  230 
corymbosum  230, 231 
glutinosum  230 
muliifiorum  230, 231 
scoparium  230, 231 
Oymnostyles barcklayana  262 
Ilarpaliwn aureutn_   252 
Harpophyllum aureum  105 
Heckeria pellata  16,117 
umbellata  16, 118 
Hedwigiaccae  90 
Helianthus annuus  253 
a wrens   252 
canescens  252 
cirrhoides - _.  253 
cornifoUus   252 
incanus  252 
parviflorus  256 
patens  253 
procumbens^   253 
pro$lraius   253 
rugosus.^^  253 
tetrapteruB  256 
Hcliopsis  240 
longipes  240 
Hemibacckaris mucronala   236 
Hemitelia, sect. Amphicosmia  272 
Heteroneuron   291 
Histiopteris incisa  312 
IToffmannia latlfolia  439 
llolomitrium arboreum  68 
calycinum  114 
ftexuosum  67 
key to species  66 
longifolium 66.67 
marginatum  68 
standleyi 52, 66 
terebellatum   66 
williamsi  52, 67, 68, 114 
Homalia glabella  97 
Hookeria acutifob'a  99 
Hookeriaceae   99 
Hookeriopsis erispa   102 
falcata  102 
incurva  101 
key to species  100 
killipii  103 
obtusifolia 52,101 
rugulosa  102 
standleyi 52, 102 
subfalcata  102 
variabilis 51,102 
Humata assamica  293 
griffithiana  293 
repens  293 
tyermanii  293 
Hy menophyllaceae  271, 330 
Hymenophyllum australe  272 
barbatum  272 
Page 
Hymenophyllum crispatum  272 
delavayi  271 
exscrtum  271, 330 
fastigiosum  272 
henryi   272 
khasianum  272 
microsorum  271 
omeiense  272 
Hymenostephium   251 
Hymenostomum mexicanum  74 
Hyophila tortula  75 
Hypnaceae  110 
Hypnella chrysophyllopodia  104 
pilifera 51, 105 
pilotrichclloides  105 
Hypnum amabile  110 
brevifolium  110 
polyp terum  110 
robostum  52, 108, 110 
Hypocyrta  — 472 
aggregata  472 
barbata  429 
gibbom    463 
leucostoma   433 
Hypolepis punctata  309 
Hypopterygiaceae  105 
Hypopterygium tamariscL  105 
Ichthyothere angustifolia  238 
lincaris  238 
terminal is  238 
Iostephane heterophylla-  249 
Isocarpha blepharolepis  248 
divaricata , 1148 
microccph&la  248 
Isodrepanium lentulum .   103 
Isoptcrygium cylindricarpum. Ill, 112 
integrifolium 52, 111 
subtrichopelma  111 
Jaegeria bellidioides  242 
dise&idea  241 
hirta  241 
mnioirfea   241 
Kkuru-quisa   480 
Lastanthaea lindenii  256 
Lastrea calcarata tericea 274 
falciloba     274 
hookeriana . .  289 
odonloloma  281 
scricea  274 
Latreillia linectris  238 
Laxmannia arborea  239 
Lecythidaceae 1 
Lecythis  8 
ampla 9, I0> 31 
armilensis  9, 11 
costaricensis  1, 10 
densa  10 
melliana  8 
tuyrana 9 
Leighia buphlhalmifiora  251 
debilis  251 
ecliptaefolia-  250 
urttciformis   252 
Leiomela bartramia  80 
Leiostoma, section  81 
540 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Pace 
Lembophyllaceae  97 
Lemmaphyllum carnosum  314 
sinense  318 
Lepiantkes peltalum  16, 117 
umbellatum 16, 118 
Lepidophyllum  233 
phylicaeforme  232, 233 
Lepldopilidium subdivaricatum _ 102 
Lepidopilum  100 
carneum 52, 103 
haplociliatum  102 
platyphyllum  102 
poly t rich oides  102 
subenerve  102 
tortifolium  103 
Leptochilus  291, 325 
alienus  291 
axillaris  325 
costatus  331 
decurrens  325,326 
diversifolius  291 
platyphyllus  325 
sect. Anapausia  290, 291 
Bolbitis  290 
Euleptocliilus   290 
Lomagramma  290 
virens  292 
Leptocionium. fiaccidum  272 
Leptodontium filescens 51, 74 
motelayi  74 
subgracile   74 
sulphureum  74 
flagellaceum  52,75 
motelayi  74 
ulocalyx  74 
Leptotheca coetaricensia  79 
Lepyrodon tomentosus 51, 91 
latifoliua 52, 90,91 
Lepyrodontaceae  90 
Lepyrodontopsis  91 
Leucobryaceae  71 
Leucobryum albieans  71 
albidum  71 
antillarum  71 
crisp um  51,71 
giganteum   71 
martianum 51, 71 
polakowskyi  71 
Leucodontaceae  90 
Leucoloma crugerianum  70 
serrulatum _ 70 
Leucomiaceae   105 
Leucomium costaricense  105 
lignicola  I0f> 
Leucostegia clarkei  294 
faberiana  294 
dareaeformis  294, 332 
immersa  293,331 
perdurana  294 
pseudocystopteris  294 
pulchra  293, 332 
Liabum hypoleucum  262 
Lilaea_._  237 
Lindsay a cultrata  295 
decomposite   295 
malabarica   295 
Page 
Lipochaeta macrocephala  254, 255 
umbellata conferta  255 
Lomagramma  290 
Lomaria decurrens  309 
matlhevrii  309 
Lorenlzia pascalioides  250 
Loxogramme duclouxii  324, 325 
fauriei  325 
involuta  325 
lanceolata  325 
makinoi  325 
salicifolia   324 
Lucuma   1 
Lycopodiaceae  335 
Lycopodium casuarinoides  328 
cernuum  328 
clavatum  328 
complanatum  328 
hamiltonii  328,335 
serratum  328 
Lygodium flexuosum  271,329 
alta  271 
japonicum    271,329 
polymorphum  329 
polystachyum  271,329 
sal ici folium  329 
scandena  329 
Macrobesleria  396, 401 
Macromitrium apiculatum  82 
barbense  81 
cirrhosum 88,89 
costaricense 52, 88 
didymodon 51, 82 
flavopilosum  85 
fuscescens 52, 89 
fusco-aureum  52, 83,90 
guatemalense  83 
hirtellum  52,86,88 
key to species  81 
longtfolium  82 
mainmillosum 52, 87 
palmense  88 
pentastichum  86 
reflexifolium  83 
rhy stophyllum  83 
scoparium  85 
standleyi 52, 85 
subundulatum 52, 86 
aubcirrhoaum  83, 84,90 
tonduzii  89 
tortuosum  83 
ulophyllum  85 
vcrrucosum 52,82 
werckleanum  89 
williamsi 52, 84 
Marattiaceae  271, 329 
Marsilea minuta  327 
Matteuccia orientalis  274,279 
Meiotheciopsis lageniformis 51,108 
Melampodium baranguilltxe..^  242 
baranquillae  242 
bonairense.    238 
dombeyanum  241 
Melanthera  254 
discoidea  254 
fruticosa  240 
INDEX 541 
Page 
Mellahuvilu  501 
Membrillo   5 
Menisci um cuspidatum  278 
subgenus of Dryopteris  291 
Meratia  237 
sprengelii  237 
Meteoriaceae  93 
Meteoriopsis consimilis  114 
patula   95 
conges ta 52, 95 
remotifolia 95,114 
Meteorium undulifolium  95 
Metzlerella costaricensis  66 
longiseta  66 
Microlepia hirta  295,332 
kurzii  294 
marginata calvescens  294 
pilosula  295 
platyphylla  294 
speluncae  295, 332 
strigosa  294 
trapeziformis  295 
rhomboidea  295 
Micromitrium lamprocarpum  90 
schlumbergeri  90 
Microthamnium elegantulum  111 
langsdorffii  112 
laxulum 52, 112,113 
lehmannii  112 
minusculifolium  112 
rep tans  112 
thelistegum  112 
Microtinu8  340 
Milleria biflora  237 
glandulosa  237 
quinqueflora  237 
triflora  237 
trifolia  237 
Mimusops  1 
Mniaceae  79 
Mnium rostratum  79 
Molina viscosa  230, 235 
Monachosorum henryi  295 
subdigitatum  295 
Monosis tarchonanthifolia  229 
Montagnaea arborescens  244 
clematidea  247 
excelsa  247 
frutescens  245 
hibiscifolia  245 
karvinskii- . _ -,  246 
Montanoa  244,245 
arboreacens  244,245 
clematidea  247 
crenata  245 
fioribunda.  244 
frutescens  244, 245 
gracilis  246 
grandiflora  245 
hibiscifolia  245 
karvinskii  247 
karwimkyi  246 
leucantha  245 
mollissima  246 
moritziana  247 
myriocephala  247 
Fin 
Montanoa olivae  246 
purpurascens^  245 
quadraugularis  247 
subglnbra  247 
s ubtruncata   246 
tehuacana  246 
triloba  247 
uncinata  244, 245 
wercklei  245 
xanthiifoKa  247 
Moquinia blanchetiana  263 
Jlavescens  263 
Narvalina domingensis  251 
Naitenbergia trinervata  238 
Neckera chilensis  96 
chlorocaulis  96 
wercklei  96 
Neckcraceae  96 
Neckeropsis undulata  96 
N em at an thus  473 
Neobesleria  400, 401, 405, 414 
Neohypnella 52,104 
ehrysophyllopodia  104 
mucronifolia 52,104 
Nepkrodium calcaratum ciliatum^ _ 274 
ciliatum  274 
cuspidatum_  292 
falcilobum  274 
jilix-mas fibriUosa  280 
khasiana  280 
gamblci  279 
membranifolium  290 
microlepis  279 
molle aurea  330 
morsei  289 
multilineatum  277 
pennigerum  277 
prolisum  275 
regulare   279 
rigidum    281 
subelatum  276 
Nephrolepia biserrata   331 
cordifolia  293 
Neurodium sinense  318 
Notholaena bureaui  307 
delavayi  307 
marantae  307, 308 
Ochrobryum obtusifolium  51, 71 
Oetoblepharum albidum  71 
erectifolium 72,73 
mittenii 51, 72 
pulvinatum   71 
Odontocarpha poeppigii  232 
Odontosoria chinensis  295 
Oleandra cumingii longipes  290 
Oliganthe# karwinskit  229 
Olleto  14 
Ollito   14 
Onychium j aponicum lucidum  309 
siliculosum   309 
Ophioglossaceae  271 
Oreinotinus  340 
acutifolixis  340 
costaricanus  340, 348 
discolor  340 
542 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
fage 
Oreinotinus ferrugineus  340, 355, 356 
fuseM3__  340, 352 
hariwegi  340 
membranaceus  340, 360 
viicrocarpwt  340 
microphyllus  340, 353 
rhombifolius 310, 385 
stellato-tomentosus  340, 357 
siellatus  340, 365 
slenocalyx  340, 362 
sulcatus  340, 358 
iiliaefolius  340, 364 
wenalandi  340, 357 
Orobanche melanekolica  446 
Orthostichidium pentagonum  92 
Orthostiehopsis tetragona  92 
Orthotri eh accae  80 
Otopappus epaleaceua pringlei  255 
imbricatus  255 
olivaceus  256 
pringlei  255 
Oxypappus gracilis  261 
scaber  261 
seemannii  261 
Oxyrrhynchium  107 
Paltonium sinense  318 
Papillaria appreaaa  95 
deppei  94 
imponderosa  94 
key to species  94 
uigrescens  95 
oerstediana  94 
Parobesleria  396, 401, 404 
costaricensis,  418 
triflora    440 
Parastrepkia  227, 232, 233 
ericoides  232 
Parietaria microphylla  477 
serpyllifolia  479 
Parthenium hysterophorus  262 
Pascatia  251 
glauca    250 
Pectis seemannii  261 
Pentachaeta gracilis   261 
Peperomia  15, 40,185 
aeuminati folia  48 
acutilimba  213 
adscendens  210 
aguacalientis  222 
aguacatcnsis  194 
orosiana  194 
picta  194 
urocarpoides  194 
alata  198 
allagotacta  47 
amphitricha  192 
santa-rosana  192 
amphoterophylla  225 
glutineofructa  226 
apoda  44 
arifolia acutifolia  193 
atirroana  208 
barbana  219 
bar bens is  191 
alajuelana  191 
Page 
Peperomia barbinodis  220 
berlandieri  223 
bistortaefolia  195 
boliviensis  222 
borucana   212 
brachypus  200 
brevicaulis  208 
brevipeduncula  43 
breviscapa  209 
cacuminicola  215 
calvicaulis  214 
bydnostachya  214 
ovata  214 
perexigua  214 
subpenninervis  214 
calvifolia  218 
abrupta  218 
calyculata  207 
candelaber  207 
carpinterana  197 
sparsipila  197 
cartagoana  222 
carthaginensis   193 
caudulilimba   49 
crypto poda  49 
Iongependula  50 
marragantina   49 
caulibarbis jimenesana  196 
chambesyana  193 
chlorostachya  203 
chrysocarpa   200 
ciliifera.  212 
filipes  212 
ciliolibractea  49 
circinata  224 
circumscissa  211 
compaginata  223 
compotrix    213 
congestifolia  207 
conjungcns  45 
cooperi  195 
copeyana  221 
cordulata  47 
cordulatiformis  47 
costaricensis  195 
crispipetiola. -  196 
cryptolepida  206 
cyclophylla  43, 224 
cylindribacca  50 
delecta  206 
delicatissima  191 
dendrophila 195, 201 
dodecatheontophylla  48 
donnell-smithii  214 
dot-ana  215 
durandi,  216 
dyscrita  198 
elata  47 
emnrginella glabrior  191 
emiliana  221 
erythrophlebia  200 
esperanzana  222 
fatoana   47 
fillcaulis  196 
filispica  195 
INDEX 543 
Page 
Feperomia fimbribractea  196 
sparsipila  196 
fissispiea  201 
flavispica  48 
fraijanesana  202 
san-isidroana  202 
subrhombica  202 
fusco-eiliata  46 
galioides longifolia  225 
gatunensis  £0 
glabella _  46 
barbtdala  196 
glaberrima  211 
glabricaulis  211 
glabrior,      44 
glabriramea 49, 211 
guanac&stana  220 
guapilesiana   210 
herediana   197 
hernandifolia ciliifera  212 
fili-pes  212 
heydei brevipeduncula  43 
hispidula  191 
barbensis  191 
hoffmannii  225 
hygrophiloides  45 
hylopbila  203 
personata  203 
hy menodes  43 
imbricata  224 
incisa  205 
irazuana  203 
isidroana  215 
jarisiana  218 
jiinenesana  196 
killipi  43 
lagartana  194 
lanceolaio-peltala 3192,193 
land folia  209 
lancilimba  209 
late-ovata  191 
glabrata  191 
leucandra  46 
leucosticta  46 
lignescens  193 
carthaginensis  193 
subcuneilimba  193 
longibacca  211 
longifolia  209 
machaerodonta  47 
macrocarpa  195 
maculosa J  212 
magnoliaefolia parrifolia  217 
mameiana  50 
martagonifolia  218 
contempta  218 
torresana  219 
wercklei  219 
megalanthera  206 
melanostigma   196 
mentiens  217 
lata  217 
montecristana  199 
multifida  201 
munyecoana   197 
Pag* 
Peperomia muscicola  226 
muscisedens  226 
myrtiUus  222 
naranjoana  211 
navarrana  215 
ii em oral is  220 
nicoyana  194 
niveo-punctulata  199 
nuda  198 
rtummularifolia  205 
oblongibacca  49 
oblongifolia  220, 226 
obscurifolia  47 
fatoaiia  47 
minor  47 
obtusifolia  216 
oersted ii  204 
punctata  205 
olivacea  221 
perlongispica  221 
orientalis  211 
ovato-peltata  192 
oxysiachya   221 
pachyphlebia  216 
palmaua  44, 220 
fragrans  221 
glabrior  44 
oppositifolia  220 
oxystachya  221 
pseudo-oxystachya  221 
panamensis  45 
paniculate  208 
parictariaefolia  45 
pannata  212 
pascuicola  47 
pellucida    42,190 
minor  43 
pygmaea  43 
pdtaia  16 
peltilinaba  213 
pendula  211 
penicUlata magnifolia  218 
peninsularis  216 
percuneata   46 
petiolaris  195 
pilulifera  199 
piperorum  49 
pirrisana  223 
pittieri  226 
pl&typhylla  214 
poaeana  208 
herediana  208 
podocarpa  192 
portobellensis  47 
pothifolia  210 
pseudo-alpina  217 
pseudo-boliviensis_ _   222 
pseudo-casaretti  218 
pseudo-hofTmannii  225 
lenticular is  225 
pseudopedicellata  198 
pseudo-tetraphylla  224 
juvenalis  224 
pailoclada  200 
magnifolia  200 
544 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Page 
Peperomia puberula  193 
punclata  205 
punctataefolia  204 
munyecoana  204 
pvrolaefolia  217 
quadrifolia  43 
quaternata  44 
queserana   210 
reflexa angustifolia  223 
pallida  222 
subemarginidata  223 
reflexaefolia  223 
rejecta  205 
replabunda  206 
rhombea  222 
rotundifolia  45,205 
rupigaudens  218 
san-joseana  199 
ean-ramoncnsif?  207 
atricha  207 
Karoo carp a  44 
scandens 47,218 
schizortachya  192 
sciaphila  192 
ecu tell ata  214 
seemanniana   44 
sepicola  225 
serpens   205 
sessilifolia  209 
sessilifolioides  209 
silvivaga  205 
stenophylla  201 
paradendrophila  201 
stenophyllopsis  201 
stevensi  45 
stipitifolia  220 
subaoaulis  209 
subdita  194 
subemarginulata  223 
subquadrifolia  43 
substriata  210 
tecticola  193 
muricola  193 
tilirina .  193 
tenellaeformis    203 
tenuicaulis  204 
tenuifolia  194 
tenuipes  192 
tilarana  211 
tonduzii  204 
tremen dalensia  216 
tsakiftna  213 
victoriana  213 
tuisana    203 
turialvensis  219 
brachystachya  219 
umbellata  16 
urocarpoides  47 
variegata 47, 212 
venabulifolia  209 
versicolor   200 
vinasiana  195 
macrocaipa  195 
viridispica  44 
perej il   44 
Peperomia virillana  198 
vueltasana  198 
wercklei  219 
williamsii  48 
zurquiana  202 
Pctrobium arbor eum    239 
Phareiranthus  239 
ferrugineus  239 
Phegopteris incrassata  296 
obseura 290 
Philactis  227, 240 
liebmannii  240 
longipes  240 
nelsonii  241 
zinnioides  240 
Philonotis sphaericarpa  80 
tenella  80 
Phyllogoniaceae  95 
Phyllogonium fulgens gracile  96 
viride  95 
viride  95 
viscosum  96 
Pilea.   367,476 
acuminata 513,515 
aenea  378,483 
alsinifolia  482 
angustata  378,483 
angustifolia  385 
dnomala  508, 509 
antioquensia iv, 389 
antioquiensis  iv, 503 
apiculata  390,503 
argeritea ,  378, 482 
arguta  516 
attenuata  391,504 
auriculata  379 
bassleriana  381,384, 488,489 
buchtienii  503 
calliirichoides  477 
capitellata  493, 499 
camulosa  501 
castronis  394,520 
oentradenioides  489 
ceratocalyx   514 
chilen&is  496 
chrysosplenioides 513, 514 
citriodora  506, 507 
cordifolia   377,480 
costata   382,490 
crugeriana  389, 491,502 
cuprea  499 
cushiensis  476, 520 
cymbifolia  493,499 
daguensis  382,488 
dauciodora  387, 495, 496, 498 
crenata 3S7, 497, 498 
jamesoniana  498 
pilosula  387, 497, 498 
uncidens  496 
delicatula  383, 495 
dendrophUa  382, 475, 488 
major  382, 488 
discolor  387,499 
diversifolia  377, 380, 478, 487 
dombeyana  494 
INDEX 545 
Page 
Pilea donnell-smithiana  382 
ecbolophylla  382 
elegans  500 
elliptica  496, 501 
gay ana   500 
failax  379,386,485,510 
glabra  485 
fasciata 517,518 
fendleri  476, 497 
filicina   487,489 
filipes  498 
fiexuosa  493,502 
foliosa  377, 478 
forgeti  510 
galloway ana  392, 511 
glaucopliylla  392, 519 
globo$a  478, 479 
goudotiana   392,506 
grandis triplinervia 511,512 
haenkei  384,492 
hazeni  493 
herniariides  478, 480 
herrerae  486 
hirsuta    518,519 
hitchocockii   483 
hyalina  389, 475, 615 
loJigipes  515 
hydrocotyliflora  385,492 
imparifolia  382, 488 
involucrata 512, 513, 515 
jamesoniana  496, 498 
key to the groups and species 368 
lamioides  494 
latifolia   392,511 
leptophylla  387,475, 497 
lindeniana  481 
Undent*  481 
lippioides  483 
losensis  391,506 
macbridei  378, 500 
macrantha  385,386, 492 
macrocystolithica  384,492 
macropnyUa 475, 509 
marginata  389, 492, 502 
melastomoides  504, 505 
microphylla   377, 
475, 477, 479, 480 
herniarioides  480 
miDutiflora  499 
mollis  509 
montana  514 
multiflora  391, 
504, 505, 507, 508 
muscoaa  477 
herniarioides  480 
mutisiana  391, 
504,505, 506, 508, 519 
myriantha  391,505 
myriophylla  379,487 
nerteroides  480 
nitida   480 
nummul arif olia  498, 512 
klugii   513 
nutans  384, 486,491 
obetiaefolia  483 
ophioderma  517 
Pag# 
Pilea orbiculata  494 
ornatifolia  499 
ovalis 513, 514 
parietaria—  481,482 
paucieerrata...   484 
pavonii  518 
pedunculata  496 
pennellii  500 
pichisana..   383,491 
picta  476,507,509 
pittieri  510 
poeppigiana  475, 507 
ptericlada   392 
pteropodon  501 
pubescens  475, 514 
involucrata  513 
montana  514 
pulegifolia   381,487 
punctata    378,504,519 
puracensis  389, 503 
purpurea  519 
pusilla  495 
ramosissima  380,487 
repena  495 
etrigosa  495 
rhombea   481,482 
rhombifolia  500 
riparia   390,504 
rojasiana  383, 486, 491 
rusbyi  502 
salentana  393, 394, 519 
scandens  491 
seemaniiii  382,490 
serpyllacea  478 
serpyllifolia  479 
serratifolia  494 
sessiliflora  382 
smithii  388, 502 
spruceana 512, 514, 515 
strigosa  495 
su bamplex icaulis  390, 504 
subcrenata  478, 479 
sublobata  484 
submissa  510 
subserrata^  504, 505 
succulenta  509 
suffruticosa  506 
tarmensis  507 
tatamensis  510 
tatei  377,482 
tetrapoda - 386, 492 
thyimfolia  478, 479 
tnanaeana  489 
trichosanthes  484 
triradiata  389,492, 502 
tungurahuae  387,500 
uliginosa  496 
umbriana  507, 508 
uncidens  496, 497 
urerifolia      493 
urticella  494 
variegata  382, 490 
vegaeana  379,485 
verrucosa  503 
weberbaueri  380,487 
Pilopogon gracilis  65 
546 CONTRIBUTIONS PROM THE NATIONAL HERBARIUM 
Page 
Pilosium longisetulum  108 
Pilotrichaceae  98 
Pilotrichella flexilis  94 
robusta  94 
hexasticha  93 
pulchella 93, 94 
rigida  93 
viridis  93 
Pilotrichum compositum  98 
key to species  98 
mucronatum  98 
pfdlidum   52,98 
ramosissimum_.   98 
Piper. 15,17,119 
acuminatissimum  136 
lalifolium  24 
acutissimum -  25 
adenophlebium  132 
aduncifolium   171 
aduncum 37,170 
laevifolhim  37 
aequaU.   30 
elliptico-lanceolatum  167 
aereum  144 
alajuelanum  158 
albuginiferum. — 181 
altevaginana  140 
amphioxys  31 
laurifolium. — 31 
amphoricarpum  29 
anguillaespicum  175 
angustifolium  170 
anisophyllum  157 
annulatum    139 
aragonense  146 
arcessitum  143 
arcte-acuminatum   l£i> 
arieianum    136 
artanthopse  138 
arundineiorum  159 
aserrianum  151 
asymmetricum  135 
auriculiferum  156 
auritifolium  154 
auritum  40 
atnplifolium  154 
seemannianum  40 
baculiferum  180 
barbinerve   35 
barbulatum  162 
biauritum  15S 
bigelovii    23 
biolleyi    134 
bisasperatum    173 
biseriatum  153 
blepharilepidum „. 160 
borucanum   135 
brachistopodum  161 
bredemeyeri  185 
brenesii.    135 
breve  38 
bellae-vistae  39 
divaricatum  39 
pallidineurum  3S 
pseudo-duraeticola  39 
pseudo-fat oanum  39 
Piper brevistylum.-- 
bryogeton  
bryogetum  
bullulaef olium _ _ 
burenii  
cabagranum  
caeruleif olium  
calcaratum  
callibracteum  
calocoma  
ealviraraeum  
candelariamim _ „ 
anfiustatum 
latif olium.. 
sepium  
capacibracteum  
carminis  
carnosicaule  
carpinteranum  
carrilloanum  
cartagoanum  
casimirianum  
catacryptum   
cativalense    
caudatifolium  
ceibense  
celatipetiolum  
celtidif olium   
ccnocladum  
cercidiphyllum   
chagreeianum  
chamissonis rubellibractevtn„ 
changu inolanum  
chiriquinum  
chirripoense  
chrysostachyum  
cilialifolium.    
cincinnatum  
citr if olium panamensc  
cla vuliger    
coactoris  
coarctatum  
coilostachyum    
eolonense  
comatum  
compactum  
concepcionis    
coneinnif olium  
concinnum  
eonfusum    
convallariodoruwi—  
cookii  
eopeyanum   
cordulatum  
granulatum  
coronatibracteum  
corozalanum    
corrugatum   
costariceDse    _ 
crassispicatum  
culebranura  
curri dabat anum  
curtispicum  
curvipilum  
cuspidispicum   
Page 
143 
160 
160 
152 
184 
160 
145 
140 
30 
26 
143 
137 
137 
137 
137 
183 
179 
168 
165 
146 
171 
23 
166 
34 
177 
150 
156 
170 
152 
146 
37 
30 
37 
23 
140 
157 
152 
151 
33 
151 
161 
168 
143 
32 
175 
131 
159 
167 
167 
170 
118 
174 
149 
25 
25 
179 
134 
145 
168 
24 
28 
183 
138 
172 
138 
INDEX 547 
Page 
Piper eyanophyllum  136 
cyphophyllum  147 
darienense  24 
tricuspe   25 
dasypogon  153 
davidianum  30 
decurrens-  148 
deflexispicum  144 
detonsum    141 
di&zanum  34 
dichotomum  161 
dilatatum aeutifolium  157 
leptocladum  163 
diquisanum__^-^,   167 
discopkorum   133 
disparifolium  156 
disparipes  162 
disparispicum   170 
dissimulans  133 
dombeyanum  118 
domingense  184 
dotanum  165 
dryadum  138 
dumeticola  175 
panamense  39 
dumetorum  147 
dunlapi  23 
echeverrianum  172 
ejuncidum__   164 
elliptico-lanceolatum  167 
elongatum 36* 170 
brachyarthrum  37 
laevifolium  37 
emollitum    181 
epigynium  160 
erectamentum  31 
escasuense  144 
escuadranum  150 
esquivolanum  161 
curypyllum  155 
evasum  155 
exiguispicum  153 
falcifolium  25 
falcigerum  147 
fatoanum  37 
figlinum  142 
fimbrhilatum  — 153 
flavescens  184 
flavinimeum  166 
fluminense  118 
fusco-bracteatum  183 
fusco-granulatum  180 
garagaranum  28 
gatunense  27 
geniculatuvi  25, 134 
longepetiolatum  134 
genuflexum  172 
gibbifolium  147 
gibbosum,  145 
glabrifolium  150 
globosum  137 
gonagricum  171 
gonocarpum  28 
gracilipedunculum  148 
grandifolium  23 
Pago 
Piper granulatum  175 
griseo-pubens   176 
revocabile  176 
guacimonum  169 
guanacastense  136 
hayesii    39 
heptaneurum  168 
hirsutum carpinterae  182 
laevius  174 
longepilosum  175 
magnifolium 172,174 
pattens  173 
pallescens  172, 177, 185 
parvifolium  17® 
subsessilifolium  171 
Umduzii  177 
hirtellipetiolum  30 
hispidum gamboanum  36 
olfersianum.  171 
kostmannianum  162 
imparipee   163 
tmperiale  40 
impube  142 
incur vum  IT 
infraluteum  33 
inhorrescens  177 
injucundum  181 
praecalvinervium  181 
praepubinervium  181 
insolens  156 
irazuanum  137 
suborbiculatum  137 
irraeum  151 
jubatum  140 
killipi    33 
calderanum  33 
labeculatum  139 
ladrillense 27 
laevibracteum  26 
laevifolium  147 
laevius  174 
lanatibracteum   182 
lanceaefolium  170 
lanceolatum 24,137 
tricuspe -  25 
lanosibracteum  182 
tanuginosum  136 
latibracteum  28 
laxispicum  24 
latifolium  24 
leptocladum  163 
leptoneuron  167 
leucophlebium  176 
lincarifolium 37,169 
linealum   16® 
lit tor ale  169 
longepetiolatum  134 
longevillosum  155 
longistipulum  149 
lucaeanum  25 
lucigaudens  32 
machadoanum  161 
machucanum    174 
magnarttherum  28 
magnifolium   131 
228317—40- 36 
548 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Pag* 
Piper magnilirabum  163 
marequitense  138 
marginatum 21,133 
matinanum  160 
maxonii    40 
medium  131,132 
melanocladum  147 
micranthera   148 
minutiapicum  29 
mirabile  164 
mallicomum    178 
mombachanum  167 
muUiplinervium  146 
nanum  143 
naranjoanum -— 17,118 
netnorense   138 
neurostachyum  160 
ii i coy an um  132 
nigricaule  168 
nitidifolium  31 
nobile minus    — 150 
nodosum  161 
n on-restrorsum  36 
nudicaule  165 
nudifolium___  140 
mimmularifolium - — 205 
ohaldianum  35 
oblanceolatura  175 
fragilicaule  176 
obliquum  153 
obi i turn  22 
obumbratifolium  134 
oerttedii  138 
omega    146 
opacibracteum  148 
operosum  141 
oppresRura   161 
orosianum  143 
otophorum  166 
ottonis  117 
pableose  168 
pacacamim  160 
pachystachyon  137 
pachystylum  139 
pallid ibracteum   32 
pallidifolium  144 
palmanum  151 
palmasanum  23 
pan amen ae  33 
papanilense  133 
papulatum  163 
papyraceiim  31 
paulownifolium 23# 145 
pavasense  173 
pejivallense  171 
peiliticaule  157 
pellucidum 42,190 
peltaphyllum  149 
lasvueltasanum  149 
peltatum 16,117 
pendens  160 
infauetum  160 
pentagonum  153 
peracuminatum  —35 
pergeniculatum  172 
Pag* 
Piper perhispidum  184 
perlongipes  164 
perpuberulum  146 
per»icariaefoliuvi-  169 
persubulatum  33 
pertractatum  130 
pervelutinum_   39 
pervenosum  22 
poxum  140 
phanerolepidum   182 
phtkidotrichon_„ _ 137 
pileatum  184 
obliquum  184 
pilibaccum  166 
pilosiusculum  39 
pinoganense  22 
pittieri  165 
plantagineum  133 
poasanum   169 
polyneurum  26 
polytrichum  168 
portobellense   40 
priBmaticum  135 
magnifolium  135 
tilarantim  135 
villoaulum  135 
pseudo-aduncum  160 
pseudo-albuginiferum  165 
pseudobumbratum  134 
pseudo-cativalense  34 
pseudodilatatum  157 
pseudo-fimbriulatum  153 
pseudofuligineum  173 
pseudo-garagaranura  28 
pseudo-glabrifolium  150 
pseudo-lanceaefolium  170 
pseudo-lindenii magnifolium- 131 
pseudopropinquum 31,139 
pseud ops is   185 
pseudo-variabile  23 
collium  24 
pachvpus  24 
pseuaovelutinvm flavescens184 
psilocladnm  137 
pubens  163 
pubinerve  138 
pubistipulum  28 
cstvlosum    28 
pulehrum copeyanum „  149 
costaricense  149 
pullibracteatum  182 
punctiunculatum  180 
rectamentura  180 
recuperatum   132 
reptabundum_„ 38,166 
reventazonis  172 
rhodostachyum  158 
riparenee  155 
ripense  142 
rip i col a    138 
rotundibaccum   164 
fraijaneaauum  164 
rotundifolium  45,205 
rufescens  138 
rugosifolium  186 
IlSTDEX 549 
Pare 
Piper sagittifolium  150 
talieinum  40 
salinasanum  176 
subscabr if olium.   178 
verbenanum  178 
Bambuanum  32 
sancti-felicis  35 
san-joseanum 21,133 
aristolochiaefolium  22 
minor  133 
san-Iorenzanum  29 
san-marcoeatium  131 
aarapiquinum  166 
scabrilimbum  36 
scalpen s  176 
BcintillanB  179 
ecleromyelum  159 
seductum  135 
sepicola  171 
septum  137 
glabrum  137; 
guacimonum  169 
aeptuplinervium  33 
sign&tum   152 
sil variorum  169 
silvicola  154 
silvivagum   166 
singulare  138 
sinuatifolium  147 
siniigaudens  142 
smilacifolium 21,133 
sperdinum  34 
spicilongura  177 
squali-pelliculum  178 
stenocladophorum  168 
stenocladum  167 
stevenei  27 
stork ii   32 
striatum  169 
subaspericaule  156 
subcaudatum  31 
subdilatatum  35 
subdivaricatum  163 
Buberythrocarpum  184 
  150 
 179 
  179 
  147 
 134 
  141 
  178 
subfuscum 
subhirsutum  
tomentosicaule, 
sublaevif olium  
sublineatum  
su bmarginense  
submolle  
submultiplinerve  140 
subnudibracteum  32 
subnudispicum   26 
svbpeUatum sidaefolium  118 
Bubquadratum  174 
subsericeum  141 
subsessilifolium   159 
palmanum  159 
subtrinervo  29 
harvevan um  30 
subvariabile  145 
subzhorquinense  142 
sulcinerv osum    159 
Face 
Piper surubresanum  148 
tabanicidum  162 
tablazo8ense  150 
tabogamim  38 
tacaroabaca  144 
talamancanum  173 
tapianum , 30 
tarrazuense  142 
tecumense  29 
tenuimucronatum  29 
tenuipes  131 
tenuispicum  167 
terra banum  149 
tilaranuru —  131 
tiliaefolium paulownifolium _ 145 
tinctum  153 
tonduzii  143 
semiherbaoeum  143 
torresanum  177 
tortuosipilum  148 
trachydermum   33 
tractifolium  166 
pubescens  166 
trichocladum  156 
trichophlebium  177 
trichopus  25 
tricuspe    25 
tri met rale  155 
trinerve 29, 136 
triseriale   155 
isakianum   — 145 
tsuritkubense  174 
tubercul atum  26 
minus  133 
tuieanum  169 
turbense — 30 
turrialvanum  135 
magnifolium  135 
ximbellatum   16, 118 
glabrum  118 
umbricola  162 
unguiculiferum  149 
urophyllum  166 
uroBtachyum   13# 
uvitanum  158 
valetudinarii  178 
vallicolum  146 
variabile  23 
ventoleranum  184 
venulosum  132 
veraguenae 40,149 
verbenanum.   178 
verrucirtigerum  165 
verruculoBum  - 165 
vicinum  157 
villiramulum  86 
gamboanum  36 
viUistipulum  162 
villosisquamulum  168 
virgultorum  167 
viridicaule  32 
viridifolium  139 
viridispicum  138 
virillanum  — - 130 
550 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Piper vitabundum  
wagneri   
minutispicum   
williamsii   
xanthoneurum  
xanthostachyum  
xiroresanum  
zacatense..    
percaudatmxi  
Page 
38 
28 
29 
32 
132 
167 
149 
157 
157 
zentanum. —  147 
zhorquinense  141 
zonulatispicum  164 
Pireella mariae    92 
Pirigara superba  4 
Plagiogyria euphlebia   310 
glauca  310 
virescens   310 
henryi    309 
pycnophylla  310 
stenoptera   309 
tenuifolia  309 
Flagiotheciaceae..   108 
Platycerium _ -  329 
grande   335 
waHichii  335 
Platyhypnidium aquaticum  106 
Pleocnemia, section of Tectaria. _ 290 
Pleopeltis, subgenus of Polypo- 
dium   316, 324 
Pleuropus bonplandii  106 
Pleurozium schreberi  107 
Pluchea adnata  237 
cortesii_ ^ _    236, 237 
floribunda-  36 
odorata  236 
salicifolia   237 
subdecurrem  237 
PodobesleHa  396, 472 
Poecilopleru -  291 
Pogonatum confertidens  114 
hamatifolium    113 
liebmannianum  114 
pittieri   114 
piirpuraacens  113 
robustum   113, 114 
Poikilopteris  291 
Polybotrya   . 291 
appendiculaia suhintegra  291 
helferiana  292 
sinensis  292 
Polymnia aspera-....   248 
connata   238 
corcovadensis  230 
scabra    _ 248 
silphioides  238 
Polypodiaceae    _ 273, 330 
Polyp odium _ _   . ... 91 
amocnum  315, 333 
pilosa  315 
apicidens   296 
argutum 316, 333 
asperaum  316 
aspidiolepis   319 
asterolepii  319 
astrotapis  319 
Page 
Poly podium bonationum  315 
cavaleriei  324 
chrysoti'ichum  320 
convoltitwn  315 
coronans  327 
crenato-piimatum  322 
cyrtolobum  322 
dactylinum  322 
dareaeforme   294 
digitatum.  324 
dissitifolium ...  296 
ebenipes   , — 323 
ellipticum   324 
undulato-repandum  324 
ensatum   326 
eury phy llum   323 
excavatum  319, 320, 334 
f. bicolor  319 
f. concolor.-   319 
glaucopsis   322 
griffithianum  321 
hastatum    322, 334 
heracleum  327 
h imalayense  323 
hyraenodes  321 
intramarginale  319 
juglandifolium pauper  323 
lachnopus   315 
lehmanni    323, 334 
mairei  323 
leiorhizon   323 
lineare. 316, 317, 318, 319, 320, 334 
f. caudato-attenuata  316 
f. contorta   iv 
heterolepia  317, 318 
loriforme. _ - - 316, 317 
steniste  318 
f. thiinbergl&na  316 
loriforme  317, 318 
f. angustifrons  318 
heterolepis 318, 319 
steniste   318 
macrosphaerum   319,320 
mairei   323 
majoense  321 
makinoi  324 
malacodon  322 
manmeienae   315 
membranaceum   321, 334 
mengtzeanum  317 
mengtzeense.  316, 333 
microrhizoma,   315 
netirodioides     314, 318 
nigroeinctum  321 
liormale  321 
oblongisorum  318 
oligolopidum.   316,317, 319 
oospliaerura  334 
ovatum   291, 325 
oxylobum   322, 323,334 
podobasia   322 
psemlodimidiatum  315 
pseudo-serratum  322 
pimctatum  322 
l'hynchophyllum  320, 321, 334 
INDEX 551 
Page 
Polypodium scalare   315 
scolopendrinum   325 
akemiense — — 322 
sikkimense   315 
simulans  315 
sinense    318 
sinicum  315 
sordidum  320 
stenolepis  279 
subauriculatum   333 
subfalcatum.    315 
subg. Eupolypodium  315 
Goniophlebium  315 
Pleopeltis   316,324 
Selliguea    324 
subimmersum  317 
f. angustifrons-  318 
subintegrum  318 
sublineare   320 
subrostratum  320 
succulenium  325 
superficiale  321 
tatsienense  323 
traheculntum 316, 317 
trickopkyllum..   315 
trisectum  322 
veitchii   322 
f. glaucopsis   322 
vulgare   315 
wallichianum  323 
tenuicauda  323 
wardii   323 
xiphiopteris  317 
yunnaneme   315 
zippcllii  325 
Polystichopsis, subgenus of Dry- 
opteris*  282,291 
Polystichum   291 
acanthophyllum  285 
indicum  285 
aculeatum  286, 287 
euryloba  287 
fargesii  287 
semifertilis-  287 
setulosa : — 286 
aristaium    282 
biaristatum 287,288, 330 
braunii  286 
carvifolium  282 
cyclolobum  286 
deltodon  283 
discretum  286 
foeniculaceum  288 
h&nryi ^ 282 
ilicifolium  285 
delavayi  285 
lobatum  284, 285, 286 
ckinense  285 
moupinense  286 
neolobatum  284, 285 
nepalense  284 
subbipianatum   284,288 
obliquum 1 284 
punctiferum  288 
setiferum^286, 330 
hastulatum  287 
Page 
Polystichum specioaum  282 
squarrosum   284, 285,286 
ckinense . ^ 285 
stenophyllum  284 
stimulans.    285 
yunnanense  286,287, 288, 330 
fargesii  287 
submuticum  287 
Polytrichaceae  113 
Polytrichum antillarum  114 
Porothamnium crassipes  97 
neckeraef orme - - 97 
Porotrichodendron eubstolona- 
  114 
97 
97 
97 
  97 
97 
ceum- 
superbum  
Porotrichum cobanense  
insularum   
longirostre  
plagiorhynchium  
plicatulum  51, 97 
Pothomorphe  15,16,117 
peltata  16,117 
umbellata 16,118 
Pottiaceae   74 
Prionodon densus 91, 92 
crispatulus 52, 92 
mexicanus   92 
divaricatus  91 
fusco-lutescens 51, 91 
key to species  91 
laeviusculus  91 
longissimus  91 
lozaaoi  91 
luteovirens 51, 91 
mexicanus  92 
patentissimus   91 
Priori odontaceae  91 
Pseudobesleria  396, 401, 408 
Pseudocampylopus, section  58 
Pseudocryphea flagellifera  90 
Pseudosytnblepharis circinnata  74 
Psomiocarpa apiifolia.  292 
Pteridium aquilinum 312, 333 
Pteris aspericaulis    311 
roseo-lilacina   311 
biaurita 312, 333 
intermittent  312 
cretica  311 
dactylina    311 
decrescens   311 
dissitifolia  311 
ensiformis.    311 
esquirolii  310 
excelsa  312 
kenryi  311 
heteromorpha  311 
longipes    312 
longipinnula hirtula.  312 
pellucida 310,333 
quadriaurita  . 311,312 
roseo-lilacina  311 
semipinnata  311 
vittata  310 
w&Hichiana 312, 333 
Pterobryaceae   92 
Pterobryopsis mexicana  92 
552 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Page 
Pterobryum angustifolium  93 
densum  93 
Ptilostephium coronopifolium  260 
galeoitii  259 
trifidum  260 
Quisa  480, 487 
Rauia subcatenulata   105 
Rhacocarpus apiculatus  90 
humboldtii  90 
Rhacomitrium oonterminura  75 
crispipilum  75 
Rhacopilaceae   90 
Rhacopilum tomentosum  90 
Rhapidorrhynchium lindigii  109 
obliquerostratum  109 
subscabrum  109 
subsimplex  108 
Rhizogoniaceae  79 
Rhizogonium lindigii   79 
mnioldes 51, 79 
gpiniforme  79 
Rhynchobederia  396, 
393, 400, 401, 405, 416 
Rhynchostegiopsis auricolor  105 
flexuosa  105 
Rhynchoetegium scariosum  106 
Rigodium gracile  97 
Rotandra terminalis _ _ 238 
Rudbeckia Iaciniata   248 
leueaniha   245 
napifolia  249 
Rudbekia eanescens  252 
Sabazia humilis  249 
iubnuda  231 
Sagcnia longicruris  331 
subtriphylla  331 
Sanvitalia  241 
heliant hoides   253 
Sanvitaliopais   240 
liebmannii  240 
nehonii  241 
Sarcorhachis 16,118 
anomala  118 
incurva  _ 17 
naranjoana__ 17,118 
Schizaeaceae  271, 329 
Schizoloma lobatum   295 
makibariea  295 
malabaricum    _, 295 
Schlcgelia violacea..   473,474 
Schliephackea meterioides  68 
Sclerocarpus   243, 244, 245 
africanus  242, 243, 244 
baranguillae  242 
eolumbianus  242 
discoideus  243 
frutescena    245 
Selaginella biformis  328 
doederleinii  328 
fulcrata   335 
inaequalifolia  328 
involvens  328 
willdenovii  328, 335 
Selaginellaceae   335 
Selliguea, subgenus of Poly- 
podium      324 
PlI^G 
SeUoa    230,231 
capensis  230 
corymbosa  230 
glutinosa  230,231 
multijlora  230 
plantaginea  231 
scoparia  23# 
Sematophytlaceae  108 
Sematophyllum caespitosum  109 
kegelianum    109 
Sigesbeckia  243 
discoidea  243 
flosculosa  241 
occidental**  239 
orientalie  243 
Silphium arborescent  256 
platypterum  255 
triloibatum  251 
Sinclairia  263 
brachypus  263 
Solenophora insignia  474 
SoUnoiinm  340 
Soliva bardayana  262 
sees i lie  262 
barclayana  262 
Sphagnace&e  56 
Sphagnum magellanicum  56 
meridense  56 
recurvum 52, 56 
Spilanthes  250 
acmella uUginom  241 
arnicoides macropoda  231 
brasiliensis  250 
ciliata  241 
dec um ben a  231 
leptophylla  231 
macropoda 231 
iodiscaea   254 
mariannae _   _ _ _   241 
oleracea  250 
pufiilla  254 
Splachnaceae    76 
Squamidium longipilum _ 93 
macrocarpum  93 
nigricans  93 
Stevia angustifolia   230 
salicifolia..-  230 
Streptopogon rigidue   75 
Syrrhopodon berterianue  72 
crifitatus   52, 72 
flavescens,  72 
inoompletus   72 
lycopodioides    -  114 
pusillus   73 
therioti     52, 73 
Taxiphyllum planissimum  111 
Tayloria scabrieeta. _  51, 76 
Tectaria   291 
austrosinensis  275, 290 
coadunata   331 
decurrens  289 
fuscipes    290 
leuzeana    331 
longicruris  331 
polymorpba  289, 330 
rockii „ ....  331 
INDEX 553 
Page 
Teetaria subtripbylla  331 
variolosa  289 
vaata  289 
Thamniopsia killipii  103 
pendula 51,103 
Thuidaceae 105,106 
Thuidium antillarum  106 
delicatulum  106 
miradoricum 52, 106 
gracilescens   106 
pelluceng  106 
wrightii-    105 
Thysanomitrium richardi 62, 65 
Tinus  340 
Tithonia  251 
laciniata  248 
Tortula caroliniana  75 
Tragoceros  240 
americanum  240 
microgloatmm   240 
schiedeanura   240 
Trichanthera gigantea  474 
Tricho manes  231 
auriculatum    272 
bipunctatum latealatum  330 
Trichopkyllum anguxtifolium  258 
Tridax  260, 261 
bicolor  259 
brachylepis  259,260 
coronopifolia  259, 260 
ehrenbergii  260 
galeottii  259, 260 
imbricata  261 
imbricatva*  261 
lanceolata  260 
palmeri  261 
petrophila  261 
pringlei  259, 260 
procumbens  261 
canescens   261 
trifida  260 
tuberosa  259, 260 
Tussacia pulchella  474 
Unxia anemonifotia  261, 262 
TJrtica arguta  516 
arvensis  515 
callitrichoides  _ 477 
cymosa  518 
dichroa  497, 498 
jioribunda  391, 505 
herniarioides  480 
hirsnta 518, 519 
involucrata  513,514 
Umoniodora  506 
marginata^  502 
melastomoidea  504, 505 
multifiora  504, 505, 508 
muti&iana  504, 505 
nummxdarifolia  512 
nutans  486 
pulegifolia  487 
punetata  504, 518, 519 
rhombea  481 
rusbyi  502 
Fagu 
Urtica serpyllacea  478, 479 
ihymifolia  478, 479 
urens  494 
variegata  382 
Vmquena.   262 
Vasquezia   262 
anemonifolia  261 
Verbesina alba  241 
arborescens  256 
arthurii  256 
conyzoides  241 
eggersii   255 
elegang  256 
fruticosa  251 
ha&tifolia   257 
helianihoides   256 
humboldtii  256 
lehmannii  256 
lindenii  256 
megapota mica   242 
montevidensis  251 
occidentalis  239 
olivacea  256 
parviflora  256 
pinnata   257 
■platyvtera  255 
pusilla  254 
scabra   256, 257 
sordescens  256 
stricta  256 
sublobata   257 
sylvicola  255 
tetraptera  256,257 
tomentosa  257 
iridentata  251 
turbacensia  257 
Vernonia aschenborniana  228 
compactifiora  229 
deppeana  228 
hypoleuca  262 
monofiis  229 
o ppositifolia ...  228 
phyltcaeformis  232 
lucida  233 
purpurascens 229 
scan dens  229 
schiedeana  229 
stellaris  228 
stellaia  228 
tarchonanthifolia  229 
tomentosa  228 
tortuoea  229 
Vesicularia amphibola   111 
Viburnum acutifolium  340, 
341, 343, 353, 354 
affine  341, 346 
hypomalacum  346 
anabaptista  356 
australe  341, 343, 345 
blandum   341, 343, 352 
caudatum  341, 344, 361 
cilatum  341, 344, 360 
conspectum  341, 343, 349 
coataricanum  341,343, 348,351 
cuneifolium,   347 
554 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM 
Page 
Viburnum denstim  340, 346 
dentatum pubescens  365 
discolor  340,341,344,355,356 
disjunctum  341, 344, 355 
dispar 341, 343, 353,354 
elatutn  340, 341, 343, 346 
cuneifolium  343, 347 
ferrugineum Donn. Smith. 355, 356 
fernigineum Raf 356 
fuscum  341, 343, 352, 353 
glabratum  340, 353 
guatem&lense  341, 343, 347 
hartwegi  340, 341, 343, 347 
hirstitum  341, 344, 362 
jucundum  341, 344, 355 
lautura - 341, 343, 351 
loeseneri 341, 344, 361 
mem bran aceum - 341, 344, 346, 360 
microcarpum  340, 
341, 345, 363,364 
evanescens  363 
mierophyllura  341, 343, 353,354 
optatum  341, 344, 358 
vagum  344, 359 
parviflorum   - 366 
prunifolium  341, 347 
pubescens  341, 345, 365 
rhombifolium  341, 345, 365 
Sloaneaefolii, section of Vi- 
burnum  340 
atdlato-pilosum  339, 357 
stellato-tomentosura  339, 
341, 344, 357 
stellatum  345, 351, 363, 365 
stenocalyx  341, 344, 362, 363 
sulcatum  341, 344, 358 
THiaefolii, section of Viburn- 
um  340, 341 
tiliacfolium  341, 344, 345, 364 
venustum  341, 343, 350, 351 
wendlandi  341, 357 
Viguiera  251 
angustifolia   229 
aurea    252 
cornifolia  252 
dentata helianthoides  252 
kelianthoides  252 
incana  252 
peruviana  253 
•pflamii  253 
procu mbene  253 
vrticiformis  252 
Villanooa  262 
anemonifolia  261 
bipinnatifida    262 
Vittaria caricina  312 
doniana  313 
angusta  313 
fag* 
Vittaria filipes  313 
flexuofsa 313, 333 
japonica  313 
lineata  312 
scolopendrina  313 
sikkimenste  312 
Webera papillosa   76 
spectabilis    76 
Wedelia brasiliensis,   250 
camosa , 250 
crassiuscula  251 
glauca  250 
paludosa   250 
latifolia  250 
pedunculosa  250 
populifolia    238 
strigosa.   250 
subvaginata  251 
trilobata    250,251 
Wiborgia oblongifolia  241, 242 
WoUastonia prostrala  242 
Woodsia lanosa_    273 
Woodwardia japonica  307 
radicang  307 
unigemmata  307 
unigemmata  307 
Wulffia baccata  249 
maculata  248, 249 
salzmanni  249 
Xanthium fruticosum  239 
parttifolium   228 
spinosum  228 
Yunca-quisa  487 
Zaluzania   249, 250 
cinerascens    249 
coulteri  249 
Zexmenia   255 
ccanothifolia  255 
conferta  255 
dulci*   255 
frutescens  251 
gkiesbrechtii.   254 
ghiesbregktii  254 
greggii  254, 255 
imbricata  255 
lindenii  256 
macrocephala   254, 255 
microcephala   255 
seandens...  255 
serrata  255 
trachylepis  255 
verbenaefolia  255 
Zinnia  240,241 
liebmannii  240 
maritima   241 
Zygodon liebmannii  80 
pimgens  80 
reinwardtii   80 
o 
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