NEW PLANTS FROM GUATEMALA AND HONDURAS. 
By S. F. BLAKE. 
INTEODTJCTION. 
In the spring of 1919 an Economic Survey Mission, headed by the late 
Major Percy H. Ashmead, was sent out by the United States Depart- 
ment of State to make a general survey of the natural conditions 
and resources of the region lying between the Motagua Valley in 
Guatemala and the Chamelecon Valley in Honduras. The botanical 
collections on which the present paper is based, amounting to about 
810 numbers, were made by Henry Pittier, G. B. Gilbert, and S. F. 
Blake, of the United States Department of Agriculture, and also by 
Dr. H. N. Whitford and Mr. L. R. Stadtmiller, who were attached 
to the expedition as foresters. A considerable part of Mr. Pittier's 
Honduran collection was unfortunately lost in transit to Wash- 
ington. 
The period of our work, May 2 to June 4, 1919, fell within the 
end of an unusually extended dry season, to which was due the fact 
that we were able to follow some of the mountain trails which in wet 
weather become nearly or quite impassable.   Mr. Pittier's collections 
were made chiefly on the main trail leading from Los Amates, De- 
partment of Izabal, Guatemala, through the Molja Valley to El 
Paraiso and La Florida, Department of Copan, Honduras, thence 
back through the Esplritu Santo Mountains and the valleys of the 
Mojanales and Tepemechin rivers to Morales in Guatemala, with 
later collections at Quirigua and Quebradas, Guatemala.   He was 
accompanied by Mr. Gilbert, Dr. Whitford, and Mr. Stadtmiller. 
The specimens collected by Dr. Whitford and Mr. Stadtmiller were 
chiefly from El Lancetillal and Macuelizo, Honduras.   The writer 
later followed the same trail from Los Amates through El Paraiso 
and La Florida to Quebradas, and in addition collected around Los 
Amates, at Gualan, and on a trip made in company with Mr. Stadt- 
miller and Mr. H. H. Bennett from Los Amates over the Sierra de 
las Minas to Izabal. 
The vascular cryptogams collected have been determined by Mr. 
William R. Maxon, the grasses by Prof. A. S. Hitchcock and Mrs. 
Agnes Chase, the Nyctaginaceae, Amaranthaceae, and Rubiaceae by 
54203—2:2 2 1 
( 
2 CONTRIBUTIONS FBOM THE NATIONAL HERBARIUM. 
Mr, Paul C. Standley, and the Eupatorieae by Dr. B, L, Robinson, 
who has described a new species of Eupatorivm collected on this 
expedition. The remainder have been determined by the writer, 
with the exception of a few species named by Mr. Pittier, who has 
already published a paper1 describing a chicle-yielding species of 
Aekras which he collected. 
CYFEBACEAE. 
Fuirena bulblpea Blake, sp. nov. 
Rootstock creeping, about 2 mm. thick; base of steins bulbous-thickened, about 
13 ram. long, 6 mm. thick; stems approximate, erect, 60 to 70 cm. high, about 3 
mm. thick below, ungulate, striate, the lower lnternodes hispid-pilose with 
spreading hairs, the upper glabrous; basal sheaths short, hispid-pilose, nearly 
or quite bladeless; stem leaves about 4, the hispid-pilose sheaths 2,5 to 4,5 cm. 
long, the brown pllose-clliate scarlous Iigules 2 mm. long, the lance-linear 
erectish blades flat, 3.5 to 14 cm. long, 5 to 8 mm. wide, about 6-nerved, pale 
green, rather densely ascending-hispidulous above, spreading-hlspid-pilose on 
margin and on nerves beneath; panicle small, 8 cm, long, slightly branched; 
spikelets sessile in clusters of 3 to 8, ellipsoid, acutish, 5 to 6 ram. long, 2 mm. 
thick; scales obovate, pale brown, scarlous, ciliate, rounded, about 2 mm. long, 
the 3 green nerves converging and abruptly produced into a spreading or re- 
curved stiff green mucro 0.2 to 0.7 mm, long; perianth scales 3, about equaling 
the achene In the dried state, the slender bent stipe about one-third as long as 
the body, the body obovate-oval, strongly 3-ribbed, papillose-puberulous and 
ciliolate, membranaceous, about 0,8 mm. long, 0.4 mm. wide, at tip abruptly 
contracted Into a bulbous-thickened blunt appendage about 0,2 mm. long, this 
provided with a slender incurved hispidulous awn about 0.2 mm. long; achene 
broadly obovold-trlgonous, pale brown, shiny, short-stlped, about 0.8 mm. long 
(excluding beak), 0.7 mm. wide, the whitish hispidulous beak about 0,5 mm. 
long. 
Type In the U. S. National Herbarium, no. 989612, collected in dryish ditch 
along railroad at Cristina, Department of Izabal, Guatemala, May 22, 1919, 
by S. F. Blake (no. 7578). 
With a general resemblance to Fm umbellata Rottb., this species may be read- 
ily distinguished by its perianth scales, which are oval, 3-nerved, bulbous-thick- 
ened above, and provided with a minute incurved awn. Those of F* umbellata 
are obovate, emarginate, membranaceous, not apically thickened, and tipped 
with a comparatively long curving awn. 
H0RACEAE* 
Dorstenia contrajerva tenuiloba Blake, subsp, nov. PLATE I* 
Habit and flowers of the typical form; leaves broadly ovate in outline, 16 
cm. long, 15 to 18 cm. wide, deeply pinnatlfld, the lobes 7, the middle and 
upper ones lanceolate, attenuate, 8 to 11 cm. long, 1,5 to 2 cm. wide, about four 
times as long as the breadth of the blade between them. 
Type in the United States National Herbarium, no. 989610, collected in damp 
woods along trail from Los Amates to Izabal, in the lower region of the Sierra 
de las Minas, Department of Izabal, Guatemala, May 31, 1919, by S, F. Blake 
(no. 7803). 
1
 On the origin of chicle with descriptions of two new species of Achras, Jowrn* 
Washington Acad. Set. 9: 431.   1919. 
BLAKE—NEW PLANTS FKOM GUATEMALA AND HONDURAS.        3 
From the series of D. contrajerva and D, contraferva houstoni L, In the 
National Herbarium, this plant differs so markedly in leaf form as to merit 
subspeciflc separation. 
EXPLANATION OF PLATB 1.—Dorstmia contraferw tenuitotoj from the type specimen. 
One-half natural size. 
OLACACEAE, 
Heisteria media Blake, sp. nov. 
Tree; young branchlets dull olive-green, the older grayish barked, glabrous; 
leaves alternate, the blades oval to oblong-elliptic or rarely obovate-oval, 10 to 
15 cm. long, 4.5 to 7 cm. wide, abruptly short-pointed with obtuse tip or rarely 
and abnormally rounded, cuneate at base, pergamentaceous, deep green and 
slightly shining above, dull beneath, glabrous, the primary veins about 7 
pairs, alternate, obscure above, prominulous beneath, forked near the tip and 
anastomosing near the margin, the secondaries obscure; petioles sulcate, 10 
to 15 mm. long; calyx in young fruit 2 to 2,8 cm* wide, coriaceous, glabrous, 
5-lobed to middle, the lobes deltoid, obtuse, plicate in the sinus; young fruit 
ovoid, acutish, 6 mm. long. 
Type in the U. S. National Herbarium, no. 988624, collected near Los Ranchos, 
Department of Cop&n, Honduras, May 6 or 7,1019, by H. Pittier (no. 8448). 
Heisteria media In its leaf characters cornea between Heisteria acuminata 
(Humb. & BonpL) Benth* & Hook.1 and H. coccinea Jacq., uniting nearly the 
texture of the leaf of H. acuminata with the obscure venation of H< coccinea. 
It Is, however, perfectly distinct from either of these species. 
LAURACEAE. 
Phoebe ambigens Blake, sp, nov. PLATE 2, 
Tree up to 30 meters high and about 1 meter in diameter; branchlets angled, 
striate, in youth finely strlgillose, glabrate; leaves alternate; petioles stout, ob- 
scurely puberulous above, glabrate, unmargined, 1.3 to 2.8 cm, long; blades 
elliptic to oval-oblong, 9.5 to 26 cm, long, 3.5 to 10 cm. wide, obtuse or usually 
short-pointed with obtuse apex, at base cuneate, pergamentaceous, in youth 
finely appressed-puberulous especially above along costa, In age glabrous, often 
tufted in the axils of the veins beneath, elegantly prominulousr-retlculate on 
both sides, the 5 to 7 pairs of lateral veins prominent on both sides, diverging 
at an angle of about 45°; peduncles axillary toward tips of branches, 5.5 to 
7.5 cm. long, obscurely puberulous or glabrous; panicles pyramidal, loose, obtuse, 
rather few-flowered, 3.5 to 6 cm. long, 4 to 8 cm. wide, finely grlseous- 
puberulous; flowers umbellulate in 3's or 4's at the tips of the ultimate branch- 
lets, the pedicels 4 to 9 mm. long, the brackets deciduous; perianth 7 mm. long, 
15 mm. wide when expanded, the tube short, turblnate, 1 mm. long, the seg- 
ments broadly oval, broadly rounded at apex, slightly or not at all narrowed 
at base, 6 to 7 mm, long, 4.8 to 5.5 mm. wide, densely appressed-grlseous- 
puberulous outside, puberulous within; stamens of series I quadrate-oblong, 
2.4 mm. long, 1.7 mm. wide, truncate, contracted Into a short-pubescent base 
only 0.4 mm. long, the upper pair of cells directly over the lower; stamens of 
series II similar, with longer stipe (1 mm. long), the anther 1.8 mm. long, sub- 
truncate ; stamens of series III 2,8 mm. long, the anther 1.4 mm. long, truncate, 
the cells lateral-extrorsely dehiscent, the filament 1.4 mm. long, short-pubescent. 
* Heisteria acuminata Benth. & Hook.; Dorm. Smith, Enum. PI. Guat 3: IS. 
1893; RhQptostylum acuminatum Humb. & Bonpl. PL Aequln. 2:130. pi. Jg#. 
1809. 
4 CONTRIBUTIONS FKOM THE NATIONAL HERBARIUM. 
bearing two-fifths Its height above its base two whitish subglobose sessile glands 
essentially as long as itself; pistil 2,2 mm. long, the depressed-globose ovary with 
a circumferential ring of hairs near middle, the style equaling the ovary; 
perianth limb decidous, the tube persistent as a shallow cup. 
Type in the U. S, National Herbarium, no. 989623, collected in clay soil at 
Rodezno, Department of CopAn, Honduras, at an altitude of about 120 meters, 
May 3, 1919, by H. N. Whltford and L. R. Stadtmiller (no. 7), 
OTHER SPECIMENS EXAMINED : 
GUATEMALA: In rich clay, Las Playitas, Department of Izabal, altitude 
45 meters, May 13, 1919, Whitford & StadtnUUer 32. 
This species bears the native names "guambo" (Honduras) and "aguaca- 
tlllo " (Guatemala). The species is well distinguished by the size of the flowers 
and the character of the leaves. The wood is used for boards. The nature of 
the fruit is unfortunately not known. 
EXPLANATION or PLATO 2,—Phoebe ambigem, from the type specimen.    Natural size. 
SILENACEAE, 
Drymaria idiopoda Blake, sp. no v. 
Prostrate annual, several-stemmed, the stems 10 to 40 cm. long, simple or 
sparsely branched, very sparsely spreading-pilose; leaf blades broadly ovate 
or suborbleular-ovate, 4 to 11 mm. long, 4 to 10 mm. wide, abruptly apiculate 
and slightly cuspidulate" at the rounded or obtuse tip, broadly rounded or 
subtmncate at base, thin, light green, ciliate, glabrous above, sparsely pilose 
along the costa beneath; petioles 1 to 3 mm. long, pilose-ciliate; pedicels 
solitary in the upper axils, sparsely spreading-pilose, 10 to IS mm. long; 
sepals 5, oblong-ovate, 3 to 4 mm, long, obtuse to acutish, the outer herba- 
ceous, obscurely 3-nerved, pilose-ciliate and sparsely spreading-pilose dor- 
sally, the 2 inner glabrous and with narrow pale margin; petals 5, white, 
linear-cuneate, 2 to 4-fld, 2 to 4-nerved, equaling or at length exceeding the 
sepals, persistent; stamens 10, unequal, the 4 longer equaling or somewhat 
surpassing the pistil; ovary ovoid, obtuse; styles 4, recurved, strongly papil- 
lose; capsule equaling the sepals, obtuse, the 4 valves thickened at tip; seeds 
23, brownish black, papillose-nruricate, 0,6 to 0.8 mm. long. 
Type in the U. S. National Herbarium, no. 989609, collected along brook at 
Hacienda La Zumbadora, Department of Copftn, Honduras, May 12, 1919, by 
S. F* Blake (no. 7381). 
Drymaria idiopoda belongs to the group of closely related species center- 
ing around D. cordata (L.) Willd,, and is distinguished by its sparse spreading 
pubescence, ovate (not cordate) leaves, and solitary axillary flowers. 
FABACEAE. 
Stylosanthes eriocarpa Blake, sp. no v. 
Frutescent, ascending, branched, 30 cm. high; young branches olive-green, 
densely pilose with ascending hairs, the older fuscous, at length gray-barked, 
subglabrate; stipules pilose, 5.5 to 6 mm. long, the sheath 3 to 4 mm. long, the 
free tips subulate, subspinescent, 2 to 2.5 mm, long; petioles pilose, the free 
portion 2 to 2.5 mm. long; leaflets 3, oblong elliptic to oblong-obovate, 3 to 
7.5 mm. long, 1,5 to 2,5 mm. wide, acute at each end, slightly mucronulate, 
slightly denticulate above, thick, deep green and sparsely short-pilose above, 
beneath paler, short-pilose, with 3 pairs of prominulous whitish veins; spikes 
composed of 2 or 3 spikelets; primary bracts pilose, unifoliolate, otherwise 
Contr. Nat, Herb., Vol. 24. PLATE I. 
DORSTENIA  CONTRAJERVA   TENUILOBA   BLAKE. 
Contr. Nat. Herb,, VoL 24. PLATE 2* 
PHOEBE AMBIGENS BLAKE 
I 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS.        5 
similar to the leaflets but smaller; secondary bract 1, scarlous, pilose-ciliate, 
2.8 mm. long, bifid to middle, the lobes lance-ovate, acute; axis rudiment 
slender-subulate, pilose-clliate, shorter than the bract; bractlet 1, similar to 
the secondary bract but with narrower lobes; calyx 6.5 mm. long (including the 
4 mm; long stipelike base), membranaceous, 6-lobed, the 4 upper lobes rounded, 
ciliate, the lowest lobe the longest, obtuse, dilate and dorsally pilose; corolla 
yellow, marked with red on banner, 5 mm. long; banner oval, barely emar- 
ginate; lateral petals equaling the keel, rounded; stamens subequal, the alter- 
nate ones with longer filaments and very small didymous anthers; pod 8 mm. 
long, the sterile basal joint densely long villous, 1,5 mm. long, the fertile joint 
villous, 8 to 3.5 mm, long, 1-nerved on the sides and loosely reticulate, the 
villous hooked beak 3 mm. long. 
Type in the TL S, National Herbarium, no. 989608, collected on an open 
rocky hillside along trail from Los Amates to Izabal, Department of Izabal, 
Guatemala, May 31,1919, by S. F. Blake (no. 7792), 
This species is a member of the section Stypo8<mthest and is most closely 
related to 8. hamata (L.) Taub. (S. procumbent Swartz), from which it differs 
in its shorter stipules and the few-veined pubescent leaflets. 
Heibomla albida Blake, sp. nov. 
Herb, the stems prostrate, rooting at the nodes, about 1 meter long, green, 
densely and finely spreading-hirtellous and with sparse longer uncinate hairs, 
the internodes 2.5 to 14 cm. long; stipules lance-ovate, 6 mm, long, attenuate, 
deciduous, herbaceous, becoming dry and brownish, striatulate, finely hirtellous, 
those of the pairs united on one side at base; leaves 3-foliolate; petioles erect, 
6 to 9 cm, long, slender, densely and finely spreading-hirtellous, the rachis simi- 
lar, 3 to 7 mm, long; stipels linear-subulate, striatulate, deciduous, 2.5 mm, long; 
petiolules densely hirtellous, 2 to 3 mm, long; lateral leaflets ovate, 4 to 6 cm, 
long, 2 to 3 cm, wide, acuminate, at base broadly rounded, papery, above greent 
sparsely puberulous, glabrate, beneath glaucescent, densely short-pilose with 
ascending white hairs, the chief lateral veins about 4 pairs, the secondaries 
somewhat prominulous-reticulate above, the secondaries and tertiaries densely 
prominulous-reticulate beneath; terminal leaflet ovate or suboricular-ovate, 4.7 
to 7 cm. long, 3 to 4.2 cm. wide, acuminate, at base rounded or euneate-rounded, 
otherwise similar to the lateral leaflets; peduncles solitary, axillary, erect, 16 
to 22 cm. long, densely spreading-hirtellous and with sparse longer uncinate 
hairs, bearing about 3 pairs of ovate, acute, strlate, mostly deciduous bracts 
about 4 mm. long; raceme simple, loose, few-flowered, about 7 cm. long In young 
fruit, like the pedicels uncinate-hirtellous; bracts herbaceous, ovate, 4 mm. long, 
acuminate, strlate, deciduous, finely hirtellous and sparsely ciliate; pedicels 
mostly in pairs, in flower 5 mm., in fruit 10 mm* long; calyx finely hirtellous 
and sparsely ascending-pubescent, the ovate entire upper lip 2.7 mm. long (from 
base of tube), the lower lip subequal, globed to below the middle, the lobes 
ovate, acuminate, the middle one longest; corolla white, faintly tinged with 
pink, 5.5 mm, long, glabrous, densely and finely papillose all over outside, the 
banner quadrate-orbicular, subemarginate, short-clawed; loment (submature) 
on an erect, densely uncinate-hirtellous stipe 4 mm. long, 2-jointed, densely 
uncinate-hirtellous, slightly curved on the upper margin, lobed beyond the 
middle on the lower, the isthmus broad, not inflexed above, the joints semi- 
orbicular, straight on the dorsal margin, broadly rounded on the lower, 7 mm, 
long, 4.5 mm, wide, the style 1,8 mm. long in flower, glabrous, deciduous in fruit. 
Type in the IF, S. National Herbarium, no. 1,037,056, collected in wood path at 
Quebradas, Department of Izabal, Guatemala, May 19, 1919, by S, P. Blake 
(no. 7510). 
6 CONTRIBUTIONS FROM  THE NATIONAL  HERBARIUM. 
Meibomia albida Is readily distinguished from its nearest relative, &L axiltaris 
(Swartz) Kuntze, by its ovate acuminate leaflets and white flowers. The de- 
scription of M. awillaria var, tfntenisii Urban * is suggestive of M> albida, but I 
can not believe that the plant above described is only varietally distinct from 
M. axillaris* 
Meibomia macrodesma Blake, sp* nov. 
Scandent herb; stem slender, green, finely and densely spreading-puberulous 
and more sparsely or on the young parts densely hispid with ascending or 
spreading brownish uncinate hairs; leaves alternate, 3-foliolate; stipules 
decidous, not seen; petioles 2,5 to 5,5 cm. long, the rachls 1.2 to 22 cm. long, 
pubescent like the stem, but the long hairs scarcely hooked; petlolules densely 
rufescent-hairy, about 2,5 mm, long; stlpels linear-subulate, deciduous, about 
5 mm, long; lower pair of leaflets obliquely ovate, 3.5 to 7 cm. long, 2 to 
3,8 cm. wide, obtuse or acute, aplculate (the apiculatlon about 1 mm. long), 
at base broadly rounded, papyraceous, above deep green, evenly but not 
densely pilose with subappressed brown hairs, densely rufescent-ciliate, be- 
neath paler green and subglaucescent, similarly but more densely and softly 
pilose, the hairs denser and more rufescent along the prominulous veins; 
terminal leaflet similar but larger and equilateral, acute, 4 to 11 cm. long, 
22 to 5,8 cm. wide; racemes axillary, about 12 cm. long, curved, very loose, 
few-flowered, pubescent like the stem; flowers paired; bracts deciduous, 
not seen; pedicels in fruit 5 to 12 mm, long, pubescent like the stem; calyx 
puberulous and hispid, 4 mm, long, its 4 teeth acuminate, the lowest longest: 
flowers not seen; stipe of fruit 5 mm, long, exceeding the calyx, densely 
hispidulous with straight brownish hairs; pod 1 or 2 jointed, 3.4 to 5.5 cm, long, 
divided on the lower side nearly to the dorsal isthmus, rufescent-ciliate and 
rather sparsely rufescent-pilose with ascending, not hooked hairs; joints 
reniform-suborbicular, 3 cm, long, 2.5 cm wide, reticulate, marginate, whitish, 
with a sinus 2 to 3 mm. deep in the middle of the back, not at all or only very 
obscurely beaked at apex. 
Type in the U, S. National Herbarium, no. 989635, collected on edge of woods, 
along trail from Hacienda El Limfln to El Parafso, Department of Cop&n, 
Honduras, May 12,1919, by S* F. Blake (no. 7359), 
This species is a member of the group Nephromerta and is closest to Mei- 
bomia purpusli (T. S, Brandeg,) Blake,* but may be distinguished by its much 
broader leaflets, pubescent with longer rufescent hairs, and by Its larger loment 
joints, which are not beaked at apex, 
Meibomia prorepens Blake, sp. nov. 
Herbaceous, the stems prostrate, 1 meter long, densely spreading-pilose with 
dull-white hairs about 1 mm, long, the internodes 3 to 11 cm. long; stipules 
lance-subulate, 8 to 10 mm, long, attenuate, persistent, connate on one side at 
base for about 3 mm., quickly becoming brown and stiff, striate, densely pilose; 
leaves 3-foliolate; petioles 4 to 9.5 cm, long, densely spreading-pilose; rachls 3 
to 12 mm. long, like the petlolules (2 to 4 mm, long) densely spreading-pilose; 
stfpels linear-subulate, striate, persistent, 4 to 6 mm. long; lateral leaflets ovate. 
5 to 10 cm. long, 2,5 to 5 cm, wide, acuminate, mucronulate, at base broadly 
rounded or subcordate-rounded, papery, above deep green, evenly iiscenrtiEig- 
* Symb. Antill. 2: 303.1900. 
4DesmoiHum lunatum T, S, Brandeg* Zoe 5:246. 1908. Not Z>. lunatum Hu~ 
ber, 1900; Meibomda lunata Rose & StandL Coutr. U. S, Nat Herb, 16:215. 
1913; Desmodium purpusii T. S. Brandeg. Univ. Calif. Publ, Bot 6:53.   1914, 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS.   7 
pilose with short hairs* glabrescent, beneath glauceseent, in youth densely 
sericeous-pilose, at maturity rather densely pilose with ascending white hairs, 
those along the veins spreading* the lateral veins 5 or 6 pairs, whitish and 
prominent beneath, the secondaries and tertiarles promlnulous-reticulate be- 
neath and to a less degree above; terminal leaflet rhombic-ovate, 5.5 to 10.8 
cm. long, 2.5 to 6 cm, wide, acuminate, broadest usually below the middle, 
cuneate-rounded at base; peduncles solitary in the axils, erect, about 18 cm. 
long, rather densely spreading-pilose, and pubescent with shorter uncinate 
spreading hairs, bearing two or three pairs of broadly ovate short-pointed pilose 
bracts about 5 mm. long, these connate on one side for half their length; raceme 
simple, loose, about 14 cm, long in fruit, the somewhat zigzag rachis densely 
uncinate pubescent with short, stiff, spreading, yellowish white hairs; bracts 
suborbicular-ovate, about 3 mm. long, short-pointed, dry, striate, deciduous; 
pedicels mostly paired, 5 mm. long in flower, 10 mm. in fruit, spreading or 
ascending, uncinate-pubescent; calyx uncinate-puberulous and toward tip spread- 
in g-pilose, the upper Up suborbicular, emarglnate, 1.8 mm, long (from base of 
tube), the lower 3-lobed to middle, the lobes ovate, acute, the middle one 2.5 
mm. long (from base of tube); corolla deep magenta, 5 mm. long, glabrous, the 
banner obovate-orbicular, scarcely emarglnate; loment on an erect uncinate- 
puberulous stipe 5 to 6 mm. long, 1 or 2-jointed, densely uncinate-puberulous 
especially toward the lower margin, straightish above, lobed about to middle 
on lower side, the broad isthmus dorsal, scarcely inflexed above, the joints oval- 
senii-orbicular, 6 to 8 mm, long (scarcely mature), 4 mm. wide, slightly in- 
flexed on the dorsal suture, broadly rounded on the lower, the persistent re- 
curved style glabrous except at base, 2 mm. long. 
Type in the U, S* National Herbarium, no. 1,037,058, collected at Los Amates, 
Department of Izabal, Guatemala, May 29,1919, by S. F. Blake (no. 7718), 
Meibomia prorepens is related to M> umbrosa Britton, of Jamaica. That 
species, however, is described as having the leaflets finely pubescent beneath 
and obliquely obtuse at the base, the bracts of the peduncle lance-subulate, the 
fruiting pedicels 2 cm. long, and the joints of the loment obliquely oblong, nearly 
separated, 8 mm, long and 5 mm. high, 
Lonchocarpus izabalanus Blake, sp. no?. 
Tree 8 meters high, with dense head; older branches gray-barked, glabrate, 
the younger olive-green, finely strigillose with rusty hairs and glanduliform- 
paplllose; petioles 6 to 6.5 cm. long, snbierete, striatulate, pubescent like the 
younger branches: rachis 6 to 7 cm, lung; petlolules 5 to 6 mm. long, densely 
rusty-strigillose; leaflets 7, opposite, oblong to obovate-oblong, those of the 
lowest pair 6*5 cm, long, 3.5 cm. wide, the others 8 to 11.8 cm, long, 4 to 5 cm. 
wide, abruptly short-pointed, rounded or cuneate-rounded at base, papery, ob- 
scurely punctate, entire, above green, sparsely and minutely strigillose, glab- 
rescent, beneath glauceseent with glandullform-papillose hairs, finely strigillose 
with whitish and rusty hairs, with some longer curved hairs along the veins, 
the lateral veins 7 to 9 pairs, prominent, the secondaries somewhat promlnul- 
ous-reticulate ; panicles axillary, cylindric, normally 15 cm, long (including 
the 3 to 5 cm. long peduncle), 2.5 cm. thick, dense above; primary pedicels 
mostly 2-flowered, 1.5 mm, long, finely strigillose like the rachis; secondary 
pedicels 0,8 mm. long; calyx 3 mm. long, rusty-strigillose, the depressed-deltoid 
teeth acutlsh, the lowest one longer and acute; banner suborbicular-oval, 12 
mm. long, 9.5 mm. wide when spread out, ret use, slightly cordate at base and 
very short-clawed (claw 1.2 mm, long), densely silky strigillose outside with 
siibrufescent hairs, outside greenish with maroon border, inside maroon with 
i 
i 
8 CONTRIBUTIONS PROM THE NATIONAL HERBARIUM. 
green spot at base; lateral petals obliquely cuneate, strigillose toward base of 
lamina above, deep maroon, 11*5 mm. long (claw 2 mm.); keel petals similar 
to the lateral, strigillose toward base of lamina; stamlnal sheath white; ovary 
and style strigose; ovules 3. 
Type in the U. 8, National Herbarium, no* 989C26, collected on shore of Lake 
Izabal, Izabal, Department of Izabal, Guatemala, June 1, 1919, by S. F. Blake 
(no, 7841), 
Although It is difficult to place this species definitely in the absence of fruit, 
it seems to be most nearly allied to L. luteomacutatus Pittier, which has a 
purple keel with a large yellow spot at the base. Its native name is " almen- 
dro," 
OXALIDACEAK 
Oxalis stenomeres Blake, sp, nov. 
Slender annual, once forked near the middle, 35 cm, high; stem terete, pur- 
plish, glabrous; leaves pinnately 3-folioIate, the leaflets deflexed; petioles 5 to 10 
mm. long, glabrous or sparsely pilose above, the rachls 2 to 4 mm. long; lateral 
leaflets subsesstle, elliptic-ovate, 3.5 to 6 mm. long, 1.G to 2 mm, wide, oblique at 
base, obliquely emarglnate at apex, thicklsh, glabrous, pale beneath; terminal 
leaflet narrowly elliptic-lanceolate, 12 to 23 mm. long, 2 to 5 mm. wide, obscurely 
cordate at base, emarglnate at apex, the spreadlng-pllose petiolule 0.6 mm. long; 
peduncles axillary, glabrous, 1,6 to 2,6 cm. long; cymes short, bifurcate, about 
7-flowered; bracts subulate, 1,2 mm. long; pedicels 1.5 to 3 mm, long, glabrous, 
jointed in the lower third; sepals oval-ovate, obtuse, membranaceous, 3.5 to 4.5 
mm. long, sparsely ciliolate with stipltate glands, bearing 2 or 3 bristles at apex 
and a few loose deciduous hairs at base; petals yellow, 6 mm. long; longer fila- 
ments appendaged dorsally, ciliolate above the appendage; styles 5, hairy; 
capsule oval-ovoid, blunt, 4.5 mm. long, dilate on the angles. 
Type in the U* S, National Herbarium, no. 989607, col- 
lected on open rocky hillside thinly wooded with pine, on 
trail from Los Amates to Izabal, Department of Izabal, 
Guatemala, May 31,1919, by S. P. Blake (no, 7791). 
Oxalis stenomeres is closely related to the rare 0. angttsti- 
folia H, B. K. {Lotoxalis angmtifolia Rose), but differs from 
the description of that species in its habit, its small lateral 
leaflets, and its somewhat pubescent calyx, 
W^; EUTACEAB. 
FlG+
 n*~Detaila Decazyx Pitt & Blake, gen. nov. 
crophMiu* m*a, Tree wIth alternate large simple punctate leaves; flowers 
Flower; 6, an' white, in slender racemiform panicles; sepals 5, free, fm- 
droecium; c, bricate, persistent; petals 5, free, imbricate, generally tie- 
gynoecium; <i, ciduous; disk short, spreading, repand-crenate; stamens 10, 
eiuidina* "sec- alternately unequal, united for about half their length and 
tlon-   Scale 4.      deciduous In a ring, the filaments lance-subulate, the short 
anthers dorsifixed; carpels 5, coherent; style 1, short, 
thick, the stigma globose-ovoid; ovules 2, superposed, subhorizontal; one 
or two (rarely five) follicles maturing, coriaceous, dehiscing by the ven- 
tral suture and over the top; seed solitary, filling the pod, inclosed by 
the crustaceous 2-lobed free endocarp except at the hilum; embryo with flat 
oval cotyledons, In thin horny endosperm, the short radicle bent against the 
broad side of a cotyledon. 
Contr. Nat, Herb,. Vol. 24- PLATE 3. 
DECAZYX MACROPHYLLUS PITT. & BLAKE 
SLAKE—NEW PLANTS FBOM GUATEMALA AND HONDURAS. 9 
Decazyx macrophyllus Pitt- & Blake, sp. nov. PLATE 3.   FIGUHES 1, 2. 
Large tree; branches rufous-strlgillose, glabrate, grayish-barked; leaves alter- 
nate, rather crowded, the blades cuneate-obovate, 18 to 28 cm. long, 5 to 9 cm* 
wide, short-pointed, long-cuneate at base, pergamentaceous, densely punctate, 
entire, slightly repand, glabrous, somewhat shining above, paler green and 
duller beneath, the lateral veins 18 to 28 pairs, prominulous beneath, the 
secondaries loosely prominulous-reticulate; petioles stout, sulcate above, gla- 
brous, 2.5 to 3.5 cm. long, somewhat enlarged at apex; panicles several toward 
tips of branches, probably subtended by reduced leaves, slender- 
cylindric, 18 to 27 cm. long (including the 1.5 to 4.5 cm. long 
peduncle), about 1,8 cm. thick, rather dense, strigillose; primary 
branches of panicle 5 to 15 mm. long, erect, simple or forked, the 
usually zigzag rachis 1 to 6-flowered; pedicels 1.5 to 4.5 mm. _ ^ 
long; bracts and brackets triangular, persistent, 1 to 2 mm. long; n ) § \] 
sepals ovate, obtusish, subherbaceous, thickish, ciliolate and * ^J v-^ 
strigillose, 1 mm, long; petals rhombfc-cuneate, obtuse, sparsely P|<; o.—De- 
gland-dotted, glabrous, 3.5 mm, long, 1.4 mm, wide; stamens tails of D& 
shorter than the petals, the flattened filaments hairy; gynoecium cazyx ma- 
shorter than the stamens, the pistils hairy; mature follicles crophyiiue^ 
broadly oval, erect, 4 mm. long, sparsely pubescent, densely ver* c£ ^^ ^ 
rucose; endocarp yellowish white; seed oblong-ellipsoid, 3 mm. dosed in 
long, blackish brown, slightly shining. the cvusta- 
Type in the U. S. National Herbarium, no. 988606, collected <*ous endo- 
near Los Ranchos, Department of Copftn, Honduras, May 6 or 7, ^lonStS 
1919, by H. Pittler (no. 8453), nal aection. 
A large tree, known to the natives as " mangle," and used for       scale 2.5. 
house building. 
This new genus is difficult to allocate satisfactorily among the subtribes of 
the Rutaceae, as the family is divided by Engler, but it clearly belongs to the 
tribe Xanthoxyleae and probably is a member of the subtribe Evodiinae. In 
this group it keys to the Old World genus Melicope, which is tetramerous and 
differs in many other characters. From the Decatropidinae, to which subtribe 
it proceeds In Engler's key, it differs in the lack of a gynophore and in its 
simple leaves;, as well as in its united filaments. The flowers are described as 
white from Mr. Pit tier's field notes* In the dried plant they are a dull yellowish 
white with darker central portion. 
JOxPLANAXiON oy PLATE 3.—Decazym macrophyllus, from the type specimen. One half 
natural size. 
MEUACEAE. 
Cedrela longipes Blake, sp. nov. 
Tree about 27 meters high, the trunk 0.7 meter in diameter; b ranch lets; fus- 
cous, glabrous, lenticellate, the older gray-barked; leaves alternate, 9 or 11- 
foliolate; petioles terete, sulcate above toward tip, glabrous, 7.5 to 11 cm. long, 
the rachis similar, 9 to 12 cm, long; petiolules slender, glabrous, sulcate above, 
1,5 to 2.2 cm, long; leaflets alternate or subopposite, the blades obliquely ovate 
or oblong-ovate, acuminate or attenuate and usually somewhat falcate, at base 
obliquely and unequally rounded, 9,5 to 12 cm. long, 3.5 to 4,5 cm. wide, char- 
laceous, glabrous, shining above, dull beneath, reticulate both sides with slightly 
prominulous veinlets, the chief veins about 10 pairs, whitish and promtnulous 
on both sides; panicles subterminal, glabrous, nearly equaling the leaves, the 
peduncle about 1 cm. long, the panicle broadly pyramidal, 22 cm, long, 23 cm* 
5420a—21 3 
10 CONTRIBUTIONS FROM THE  NATIONAL HERBARIUM. 
wide or more, the many-flowered branches and branchlets spreading at right 
angles, the cymules 2 or 3-flowered, the pedicels 1 to 2 mm, long; calyx 2.5 mm. 
long, splitting irregularly, the 5 teeth deltoid, obtuslsh, obscurely ciliolate; pet- 
als 5, quincunctal in aestivation, narrowly oblong, obtuse or apiculate, 7.5 mm. 
long, 2.5 mm. wide, densely griseous-puberulous outside, short-ciUate, pilose 
within, adnate to the column by a ventral ridge for nearly half their length; 
column glabrous, equaling the pistil; stamens 5, shorter than the pistil, the 
subulate filaments 2 mm. long, sparsely pilose at middle, the oblong sagittate- 
based apiculate glabrous anthers 1 mm. long; pistil 4 mm. long, glabrous, the 
ovary subglobose, scarcely exceeding the stout style, the stigma 1-5 mm. wide. 
Type in the U, S. National Herbarium, no. 989582, collected in clay soil at El 
Parafso, Department of Cop&n, Honduras, altitude about 750 meters, May 8, 
1919, by H, N. Whitford and L. R. Stadtmiller (no. 30). 
This species Is easily distinguished by its glabrous long-petioluled leaflets. It 
bears the vernacular name "cedro." 
Trichilia izabalana Blake, sp. nov. 
Tree 8 meters high; branches olive-green, obscurely puberulous, glabrate; 
leaves alternate, 7-foliolate; petioles dully puberulous, somewhat flattened 
above, 5,5 to 7.5 cm. long; rachis flattened and sulcate above, puberulous, 9 to 
14 cm. long; petiolules of the lateral leaflets 3 to 7 mm. long, of the terminal 2 
cm. long, puberulous; lowest pair of leaflets disjunct, the blades oval, obtuse, 
normally 6 to 8 cm. long, 4.5 to 5.5 cm. wide; two upper pairs of leaflets opposite, 
the blades oval to obovate-oval, 9,5 to 15 cm. long, 4*8 to 7.2 cm. wide, obtuse or 
bluntly short-pointed, at base cuneate to rounded, papery, entire, glaucescent- 
green above, glabrous except for the puberulous sulcate costa, beneath brighter 
green, puberulous along the prominent costa and sparsely so along the 9 to 11 
pairs of prominent veins, elsewhere glabrous, the secondaries obscure; terminal 
leaflet obovate, equaling or sometimes smaller than the upper pairs; panicles 
axillary, slender-cylindric or in fruit conic-cylindric, less than half as long as 
the leaves, puberulous, the peduncle 4.5 to 7 cm. long, the rachis 5 to 7,5 cm, 
long; primary branches of panicle short, the lower about 3-flowered, the upper 
1-flowered; pedicels 1 to 2.5 mm. long; calyx 1 mm. long, 5-Iobed to middle with 
obtuslsh lobes, sparsely strigillose; petals 5, white, oblong-ovate, obtuse, 3.5 
mm. long, sparsely puberulous outside; stamens 10, the filaments united for 
one-third their length, pilose on margin; anthers short, pilose; disk broad, 
cupular, embracing base of ovary; ovary subsericeous-velvety, 2-celIed; ovules 
2, collateral; style one-third as long as ovary, pubescent 
Type in the U. S. National Herbarium, no. 989604, collected on edge of woods 
along Rio Mosinga, Izabal, Department of Izabal, Guatemala, June 2, 1919, by 
S. F. Blake (no. 7863). 
Trichilia izabalana seems to be most nearly related to T. oaxacana Blake, 
but may be easily distinguished by its narrow panicle, odd-pinnate leaves, and 
evenly puberulous petioles. 
EUPHOEBIACEAE. 
Phyllanthus capllllpes Blake, sp, nov. 
Shrubby below, about 30 cm. high; stem slender, simple, or branched, glabrous, 
somewhat zigzag; leaves alternate; stipules subulate, subscarious, persistent, 
1.5 mm. long; petioles very slender, glabrous, 3 to 13 mm. long; blades lance- 
ovate, 3,5 to 5.5 cm, long, 11 to 21 mm. wide, acuminate, cuspidate, cuneate- 
rounded at base, membranaceous, glabrous, deep green above, pale beneath, 
pinnate-veined with about 6 pairs of lateral veins; flowers few in the axils, 
usually 1 pistillate and 2 or 3 staminate; pedicels of staminate flowers 5 to 7 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS.      H 
mm. long, capillary; sepals 5, about 0*8 mm* long; disk membranaceous, broad, 
5-lobed; stamens 5, united into a column, 3 of the filaments free about half 
their length, the other 2 united nearly to apex; anthers vertically dehiscent; 
pedicels of pistillate flowers capillary, 2 to 2.8 cm. long; sepals 5, broadly ovate, 
acutlsh, entire, imbricate, 1 to 1,8 mm. long, greenish-centered and pale- 
margined; disk cupular; styles 3, united at base, 2-parted nearly to base; 
stigmas capitate; capsule 3-celled, greenish white, glabrous, about 3 mm, long 
and wide; seeds brownish, curved, 1,8 mm, long, verrueose in about 5 lines on 
the broader face. 
Type in the U, S. National Herbarium, no. 989594, collected in gravelly places 
at Quebradas, Department of Izabal, Guatemala, May 19 to 22, 1919, by H, 
Pittier (no. 8614), 
In many features this species agrees with the description of P. ncogratuxtensi* 
Muell. Arg*, but it differs in the character of the stamens, which do not agree 
precisely either with those of the section Peltandra or of the section Kirganelia. 
Croton tragioides Blake, sp. nov. 
Erect annual, about 60 cm. high, much branched, often trifurcate near mid- 
dle; stem yellowish white, stellate-pilose with subsessile hairs, their knob-like 
bases persistent; leaves alternate; stipules linear-subulate, entire, setose-pilose, 
about 1.8 mm. long, persistent; petioles stellate-pilose, 3 to 18 mm. long, bear- 
ing a pair of yellowish white pezizlform glands at apex; blades triangular-ovate 
or ovate, 2 to 5.5 cm, long, 1,8 to 3.7 cm, wide, obtusish, at base truncate- 
rounded to subcordate, coarsely crenate-serrate with entire or slightly dentate 
obtusish teeth, thin, green and sparsely pilose with mostly simple hairs above, 
beneath paler and more densely stellate-pilose; racemes bisexual, axillary, 
4 to (at length) 15 mm. long, much shorter than the leaves, stellate-pilose; 
pistillate flowers one or two, basal, their pedicels In fruit 2.5 to 3 mm. long; 
staminate flowers crowded, about 6, their pedicels 0,6 to 1 mm, long; bracts 
triangular, about 0,5 mm, long, entire, hispid-pilose ciliate but egianduiar; calyx 
of pistillate flower 5-parted, the sepals spatulate-oblanceolate, acutlsh, slightly 
accrescent, subequal or 2 slightly larger than the others, stellate-pilose, in 
fruit about 3 mm. long; petals none; hypogynous glands short, lanceolate, obtuse, 
free, alternate with the sepals; ovary densely stellate-pilose; stigmas 3, sessile, 
spreading, thicklsh, 2-parted nearly to base; calyx of staminate flower about 1 
ram, long, the 5 sepals ovate-triangular, obtuse, sparsely hispid-pilose; petals 5, 
oblong-ovate, acuminate to an acutish tip, 1,5 mm, long, dilate near base with a 
few long hairs and sparsely ciliate at tip; hypogynous glands 5, ovate, obtuse, 
free; receptacle pilose; stamens 9, glabrous; capsule pale, snbglobose, 4 mm. 
long, sparsely pilose with chiefly simple hairs; seeds compressed, dark olive-gray, 
lucid, 3 mm, long, finely and obscurely Impressed-punctulate in longitudinal 
lines. 
Type in the U. S. National Herbarium, no. 989621, collected on shore of Lake 
Izabal, Izabal, Department of Iaabal, Guatemala, June 2, 1919, by S. F. Blake 
(no, 7854). 
OTHER SPECIMENS EXAMINED : 
TABASCO (?) ; La Colmena, August, 188©, Rovirosa 562. 
GUATEMALA: Along roads,Livingston,February, 1905,TUrekheim 8751 (also 
distributed as no, II, 1150). Weed, Livingston, April, 1905, Maxon & 
Hay 3777*   Weed in banana field, St* Thomas, May, 1909, Deam 6056. 
HONDURAS : On railroad bank, plain of Sula, 1887, Thieme 246. Roadsides* 
San Pedro Sula, May, 1888, Thieme 335; September, 1888, Thieme 558/ 
OOSTA RICA : Savannas of Boruca, November, 1891, Pittier & Durtmd 457* 
•These three collections by Thieme were distributed under J. D. Smith's no. 
5465. 
12 CONTRIBUTIONS FROM  THE  NATIONAL   HERBARIUM, 
This new species is closely allied to CV glandtUosus septentrionali* Muell. 
Arg., and Is evidently of the same weedy nature. It Is distinguished from that 
plant by the lack of either sessile or stipltate glands on the bracts of its in- 
florescence and by its smaller seeds- The specimens distributed by Captain 
Smith have uniformly been named Tragia nepetaefolia, which plant, indeed, C. 
tragioides closely resembles in general appearance. 
Caperonia pubescens Blake, sp. nov. 
Annual, 35 to 65 cm. high, simple or branched at base, erect or some- 
times creeping and rooting at base; stem slender, densely spreading-hispld- 
pilose and setose-hispid, many of the hairs thickened and glandular at tip; 
leaves alternate; stipules linear subulate, hispid-pilose, persistent, 3.5 mm. long; 
petioles 4 mm, long or less, densely pubescent like the stem; blades of lower 
leaves oblong to oval-oblong, 2 to 4 cm, long, 1.2 to 1.5 cm, wide, obtuse, those 
of the middle and upper leaves linear-lanceolate to narrowly oblong lanceolate, 
4.7 to 6 cm. long, 8 to 14 mm. wide, acute to acuminate, rounded at base, serru- 
late throughout with 20 to 25 pairs of acute teeth, deep green and rather 
sparsely hispid-pilose with simple hairs above, paler and more densely hispid- 
pilose chiefly along the veins beneath, the upper with 12 to 16 pairs of 
veins; racemes axillary, longer or the uppermost shorter than the leaves, 
hispid-pilose with mostly gland-tipped hairs, the peduncle about 4 cm. long, 
the rachis about as long; pistillate flowers solitary at base of raceme, on 
pedicels about 7 mm, long; staminate flowers separated by about 1 cm, from the 
pistillate, crowded above, on pedicels 1 mm. long; bracts triangular, persistent, 
hispid-pubescent, 0.8 mm. long; sepals of pistillate flower unequal, 3 larger, 2 
smaller, united below, oblong to obovate-oblong, obtusish, slightly accrescent, 
rather sparsely pi lose- setose with gland-tipped hairs, the larger 3 to 3.5 mm. 
long; petals not seen; ovary densely murlcate, hispid-pilose and more sparsely 
pilose setose; styles laciniate-parted Into about 5 lobes; calyx of staminate 
flower 2,3 mm. long, hispid-pilose and more sparsely glandular-hispid-setose, 
unequally 5-lobed about to middle, the free lobes lanceolate to triangular-ovate, 
acute; petals 5, cuneate to cuneate-obovute, truncate to emarginate, white, 
glabrous, unequal, 3 larger, 2.8 mm, long, 2 smaller, about 2.3 mm. long; 
stamina I column truncate-apiculate, glabrous; anthers in two whorls of 5, the 
lower with short filaments, the upper with long filaments; capsule subglobose, 
about 4 mm. in diameter, hispid-pilose and more sparsely glandular-hispid-setose; 
seeds globose, grayish, 2 mm. in diameter, finely puncticulate. 
Type in the U. S, National Herbarium, no, 980603, collected in an open grassy 
plain at Oistina, Department of Izabal, Guatemala, May 22, 1919, by S, F. 
Blake (no, 7574). Also collected in essentially the same locality by H, Pittler 
on June 12, 1905 (no. 383). 
This species is well distinguished by its dense pubescence. Unfortunately no 
young pistillate flowers are present, so that the presence or absence of petals 
in them cannot be determined, 
Dalechampia molliuscula Blake, sp, nov. 
Twining; stem slender, branched, dull-pilose with loosely matted hairs, gla- 
brescent; leaves alternate, trifoliolate; stipules subulate, herbaceous, deciduous, 
2.5 to 4 mm. long; petiole dull-subtomentose-pilose, 6 to 15 mm, long; stipelules 
subulate, 1.5 mm, long; leaflets abruptly contracted Into a petiolule-Hke base 
about 1 mm, long, the lateral blades obliquely ovate, 3,5 to 6.5 cm, long, 1,3 to 3.3 
cm. wide, acute or acuminate, truncate-rounded on lower side at base, oblique on 
the upper, crenate-serrulate with blunt depressed teeth, pergamentaceous, deep 
green above and sparsely pilosulous, densely so along the costa, glabrate, be- 
neath duller green  and rather densely dull-pilosulous with spreading hairs 
BLAKE—NEW PLANTS FEOM GUATEMALA AND HONDURAS,      13 
especially along the veins, prominulous-reticulate; terminal leaflet oral or 
elliptic, acute to acuminate, acute at base, 5 to 8 cm. long, 118'to &8 cm. wide; 
peduncles solitary in the axils, about 1 cm. long; bracts of the involucre sub* 
orbicular-ovate, in fruit 2 cm* long, 2.5 cm. wide, 3-lobed about to middle with the 
middle lobe smallest, 5-nerved, sessile, pubescent like the leaves; calyx of pistil- 
late flowers about 8 mm. long in fruit, the 12 sepals linear, laciniate-pinnate 
above, pilose-spinose; capsule 9 mm. wide, sparsely pUoee-spinoee; style column 
linear, slightly dilated and excavate at tip, persistent, sparsely pilose-spinose, 
about 7 mm. long; seeds subglobose, about 3 mm, long, dull grayish, marked with 
about 5 lighter lines* 
Type in the U. S. National Herbarium, no. 980631, collected on edge of thicket 
at Quebradas, Department of Izabal, Guatemala, May 20, 1919, by & F. Blake 
(no. 7547). 
Related to Daleckampia triphylla Lam., but to be separated by its shorter and 
comparatively broader leaflets, these densely soft-pubescent beneath. 
Hanihot gualanensis Blake, sp. nov. 
Shrub 4 meters high; stem stout, green, glabrous; leaves alternate; stipules 
deciduous, not seen; petioles stout, striatulate, glabrous, 20 to 23 cm. long; 
blades orbicular in outline, 24 cm. long (from tip of basal lobes to apex), 25 
to 29 cm. wide, thin-papyraceous, 9-lobed to within about 2 cm. of base, the lobes 
obovate to rhombic obovate, broadest above the middle, the middle lobe and some- 
times one or two of the lateral ones somewhat abruptly repand-dilated above 
the middle, acute and cirrhous-tipped, entire or rarely obscurely repandlobed 
above, glabrous and dark green above, glaucous with a microscopic pulverulence 
beneath, the lateral veins about 9 to 13 pairs, prominolous beneath, the sec- 
ondaries few and slightly prominulous or obscure, the middle and upper lobes 
11 to 16.5 cm. long, 4.5 to 6.5 cm. wide, the lowest pafr much reduced, about 4J5 
cm, long, 1.5 cm. wide; panicles several in the axils, 11 cm. long* many-flowered, 
glabrous, pistillate below, staminate above, the fiowens nodding; bracts linear- 
subulate, entire^ glaucous, 2 to 6 mm. long; pedicels 1 to 4 mm. long; pistillate 
calyx greenish, glaucous, 12 mm. long, the 5, sepal? lanc^oblong, obtuse, 3~ 
nerved, 4 mm. wide; disk fleshy, entire, 1 mm.-high; pistil 6 mm. long; ovary 
subglobose, glabrous; styles 3, shortly united at hase, much lobed and lobulate; 
staminate calyx (not quii^ mature) 7 mm. long* glabrous, glaucous, in bud sub- 
globose, the 5 sepals oblong, obtuse, 3-nerved, 3 mm. wide; stamens 9, glabrous; 
disk depressed, fleshy, 9-lobed; ovary rudiment obsolete., 
Type ill the U, SL National Herbarium, no* 989598, collected on edge of woods, 
Gualftn, Department of Zacapa, Guatemala, May 20, 1919, by S. P. Blake (no. 
7088). 
Manihot gualanensis seems from description to be most closely related to 
Af. rhomboidea Muell. Arg., of Mexico, but it differs in its deciduous stipules and 
its 9-lobed leaves, as well as its smaller staminate calyx. Flowers occur in the 
intermediate part of the panicle with all or nearly all the stamens abortive^ a 
large HMobed disk, and a definite ovary rudiment. 
Euphorbia stenomeres Blake, sp. nov. 
Erect, very slender annual, simple or branched from the base, 12 to 32 cm, 
high; stem greenish, glabrous, the branches short filiform; leaves opposite; 
stipules united, glandular-denticulate, about 0*4 mm, long; petioles stoutlsh, 
1 mm. long; blades linear, 7 to 23 mm. long, 1 to 1.8 mm, wide or the lowest 
2.5 mm. wide, often falcate, obtuse or acute, at base unequal, obliquely rounded 
or subcordate, obscurely or distinctly mucronulate-denticulate above or nearly 
throughout, thickish, glabrous, above deep green, beneath glancescent, tripli- 
nerved, the lateral nerves reaching to about the middle; eymules few-flowered, 
54203—22 4 
14 CONTRIBUnONS FROM THE NATIONAL HEBBABIUM. 
terminating brandies and branchlets; bracts minute; pedicels about 0,6 mm. 
long; Involucre glabrous, campanulate, about 0.8 mm. long; glands 5, small, cup* 
shaped, 4 of them with white thicklsh suborbicular entire appendages about 
0,6 mm. long; styles 3, oblong, equaling the ovaryt bifid at apex; capsule gla- 
brous, greenish, with rounded angles, 1.3 mm. long; seeds oblong, 0.9 mm. long, 
0.5 mm. wide, blackish, bluntly quadrangular, microscopically papillose, the 
faces with about three low broken transverse ridges. 
Type in the U. S* National Herbarium, no* 989628, collected on open hillsides 
wooded with pine, along trail from Los Axnates to Izabal, Department of Izabal, 
Guatemala, May 81, 1019, by S. F. Blake (no. 7776). 
This species belongs In the section AnAsophyllum, generally treated as a genus 
(Ghamaesyce) by American authors, although Its structural characters are of 
the slightest. It is related to E. ptitcheUa H. B. K., but apparently differs In 
its strictly linear, thickish, serrulate leaves. It may prove to be identical with 
that species, but in any case the name E. putchella is preoccupied and so un- 
available. % 
C1USIACEAE, 
Clmda utilis Blake, sp. nov. PLATE 4. 
Shrub 6 meters high; branches subterete, stoutish, gray-barked, glabrous; 
leaves opposite; petioles sulcate above, glabrous, 8 to 10 mm. long; blades 
cuneate-obovate* 5,5 to 8 cm, long, 2,7 to 4.5 cm* wide, cortaceous-pergamenta- 
eeous, obtuse or rounded, cuneate from near the middle to the base, entire, 
glabrous, deep dull green on both sides, scarcely paler beneath, papillose on 
both sides when dry, the primary veins about 15 to 17 pairs, straight, parallel, 
slightly promlnulous when dry, the surface between them rather obscurely 
Rtrfate; pistillate panicles terminating branches and branchlets, about 5 to 8* 
flowered, glabrous, the peduncle about 6 mm. long, the branches wide-spreading, 
the pedicles stoutlsh, slightly clavate, 3 to 6 mm. long, the bracts deltoid, con- 
nate, obtusish, 1.5 mm. long; bracts at base of calyx 2, rotund, 2 to 2.5 mm. 
long, coriaceous; sepals 4, the outer pair suborbicular, broadly rounded, 3,5 
to 4.5 mm. long, 6 mm. wide, the inner pair similar but larger, about 7 mm. 
long, 9.5 mm, wide; petals 6, broadly wedge*obovate, rosy white, about 1 cm, 
long and wide, broadly rounded; ovary surrounded at base by a dense glutinous 
collar of connate staminodes 1,5 to 2.5 mm. high, bearing scattered, sessile, 
vertically dehiscing, 2-celled anthers; ovary 5 mm. high, subglobose, 6 or 7- 
celled; stigma sessile, fleshy, as broad as the ovary, bluntly 6 or 7-1 obed; fruit 
subglobose, 12 to 15 mm. long, green tinged with maroon, surrounded at base 
by the persistent calyx; seeds about 6 in each cell, horizontal-ascending, sub- 
biserlate, pale grayish, about 3.5 mm, long, surrounded by the orange aril. 
Type in the D, S. National Herbarium, no, 989595, collected on shore of Lake 
Izabal, Izabal, Department of Izabal, Guatemala, June 2, 1919, by S. F. Blake 
(no. 7859). 
Owing to the lack of staminate flowers, it is difficult to place this species 
definitely. Prom description it seems to be close to Clusia parvicapmla Vesque, 
to which Vesque sissigns a range from CGrdoba, Mexico, to Colombia and Peru. 
From this species C. utilis differs in Its subterete branches, its smaller leaves on 
shorter petioles and with rather more numerous lateral veins, and its much 
shorter crown of fused staminodes, which bears rather numerous anthers. 
Clusia utilis Is known at Izabal as *' quiebramuela " in reference to the fact 
that the buffy yellow juice of the fruit Is used on cotton for toothache. The 
young fruit, cut across, is used to stamp clothes, forming a wheel-shaped design, 
brown at first and changing to blackish on washing, which is said to be 
permanent. 
EXPLANATION OF FIXATE 4.—Qlv&ia utilis, from tho typo specimen.    Natural size. 
Coritr, Nat. Herb,, Vol, 24. PLATE 4. 
CLUSIA UTILIS BLAKE. 
\ 
Contr. Nat. Herb,, Vol. 24, PLATE 5, 
MlCONIA  ANGUSTISPJCA   BLAKE 
f 
■s "' 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS,      15 
MELASTOMATACEAE, 
Kiconla angustlspica Blake, sp. no v. PUTE 5, 
Small tree; branches compressed, subangulate, glabrate, grayish-barked; 
branchlets compressed, hexangular, densely stellate-pilose with depressed sor- 
did hairs; leaves opposite; petioles stout, 4 mm. long* densely depresged-stel* 
late-pilose; blades oval-elliptic, 16 to 20.5 cm. long, 6 to 8 cm. wide, shortly 
falcate-acuminate, at base long-cuneate, broadest near the middle, chartaceous, 
entire, above dull green, obscurely and sparsely tuberculate but smooth, be- 
neath scarcely paler green, along the venation densely stellate-pilose, on Surface 
sparsely so, 3-ribbed (with an additional obscure marginal Vein), the lateral 
veins about 27 pairs, prominulous, the secondaries less prominulous; peduncle 
(LS cm. long) and the straight rachis of the spikelike panicle (19.5 cm, long, 
13 cm, thick) densely stellate-pilose with sordid-rufescent hairs; flowers ver- 
titillate, white, sessile; calyx urceolate, 4 mm. long, truncate, minutely 5- 
toothed; petals (in bud) suborbicutar, obtuse, externally puberulous; stamens 
10; filaments glabrous, 2 mm* long; anthers lance-subulate, slender, 3 mm* long, 
with a short obtuse dorsal basal appendage; ovary 5-eelied; style cylindric, 
straight 
Type in the XL S. National Herbarium, no, 989618, collected in clear forest* 
at Quebradas, Department of Izabal, Guatemala, May 19 to 22, 1919, by H. 
PIttter (no. 8596). 
This species belongs in the group Haplostachyae of Eumiconia and Is dls* 
tinguished among the species of that group by its oval-elliptic 3-ribbed short 
petioled leaves, 
ISxpLAKATiON OF PLATO 5+—Mioonia anffuati$pivar from the type specimen, Natural atse. 
Prosanerpis Blake, gen, nov. 
Corticicolous shrubs, climbing by nodal and internodal roots and nootlets; 
leaves large, membranaceous, dentate or denticulate, ovate, those of the pairs 
very unequal; flowers small, In small axillary and extra-axillary dichotomoiis 
fasciculate cymes; bractlets minute; calyx tube eubgloboae, abruptly eon 
tracted above the ovary into a short neck or the latter obsolete, the limb 4 or 
rarely 5-lobed* the inner lobes deltoid, acutish, adnate for most of length t» 
the outer lobes, these oblong or rhomblc-objftpg, acute, hispid-spinose on margin, 
three to five times as long as the inner; petals 4 or rarely 5, quadrate-oblong, 
sobtroncate, slightly retuse, about half as long as calyx lobes; stamens 8 (or 
10), strongly indexed (in young flower), glabrous, the linear filaments equaling 
the ellipsoid-oblong obtuse unappendaged anthers; ovary thin walled, free from 
calyx tube except at apex, globose, 4-eelled, the placentae extending into the 
middle of the cells and 2-winged at tip; style cylindric, straight, longer than 
ovary, equaling the petals, the stigma subcapitate, slightly broader; fruit a 
dryish berry; seeds innumerable, tiny, cuneate-oblong, straight. 
Type species, Prosanerpis trichoealyx Blake. 
This genus, possessing a habit decidedly unusual in its family, belongs in 
the Miconieae next to Henriettea DC., from which it differs in its obtuse, not 
beaked anthers, and its membranaceous denticulate leaves. An undescribed 
species occurs in Panama* 
Prosanerpis trichocalyx Blake, sp, nov. 
Stem woody, terete, about 4 mm. thick, climbing up tree trunks to a height 
of 2 meters or more by means of numerous chiefly adventitious roots and 
rootlets, closely appressed, sparsely branched, in youth fuscous and rather 
densely spreading-hispid with sordid hairs, an age glabrate and brownish; 
leaves few, opposite, those of the pairs very unequal; petioles of the larger 
16 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
leaves slender, striate, 9 cm. long, rather densely hispid with loosely spreading 
sordid hairs; blades ovate, about 19 cm. long, 11 cm. wide, acuminate, broadly 
rounded at base, finely crenulate denticulate throughout, membranaceous, 7- 
nerved and prominulous-reticulate beneath* above deep green, evenly but not 
densely pilose-hispid and ciliate with ascending, scarcely tubercula to-based* 
dull white hairs, beneath loosely spreading-pilose on all the veins and veinlets; 
cymes few, in axillary and extra-axillary fascicles, dicbotomous, about 12 mm. 
long, few-flowered, densely puberuloug with subglandular hairs; bractlets tri- 
angular, acute, denticulate, cuspldulate, subherbaceous, 0.8 mm, long or less; 
pedicels 2 mm. long or less, densely subglandular-puberulous; body of calyx 
tube in flower 2 mm. long, subglobose, densely sprea ding-hispid and subglandu- 
larpuberulous, in fruit 8 mm. long and thick, abruptly contracted into a free 
tubular-campanulate apex 1 mm. long; outer calyx lobes oblong or rhombic- 
oblong, acute, sometimes with two lobes near middle, hispid-spinose-ciliate, 3 
to 4 mm. long, spreading In fruit; petals in young flower 1,2 mm. long, 0.0 
mm. wide, oblong-quadrate, subtruncate, slightly retuse, glabrous, probably 
whitish or pinkish; filaments 1 mm. long, equaling the anthers; seeds 0,5 mm. 
long, white and yellowish. 
Type in the U* S. National Herbarium, no. 989630, collected on tree trunks 
in tropical forest, Quebrada Mojanales* Department of Cop&n, Honduras, 
May 16,1918, by S. F, Blake (no. 7476). 
MYBSINACEAE. 
Btylogyne guatemalensis Blake, sp, nm\ 
Shrub; branches stout, terete, fuscous becoming grayish brown, glabrous; 
leaves alternate; petioles stout, sulcate above, glabrous, unmargined, 5 to 12 
mm. long; blades oval or slightly obovate-oval, 6 to 12 cm. long, 3 to 6 cm. wide, 
very shortly aplculate-acuminate, at base euneate, entire, coriaceous, deep dull 
green above, obscurely squamulate, beneath paler and duller green, evenly but 
rather sparsely white-papillose, glabrous on both sides, the chief veins about 28 
to 80 pairs, prominulous beneath, curved-anastomosing near the margin, some- 
what anastomosing-rettculate; panicles pyramidal, subsessile, terminating 
branchlets, 8,5 to 4.6 cm. long and as wide or slightly wider, glabrous, the 
flowers nnbellate-clustered toward the tips of the branchlets of the panicle, on 
pedicels 2 to 35 mm. long; sepals 5, oval-oblong, 1,8 mm. long, rounded, free, 
dorsally elevated-punctate, coriaceous-herbaceous, with narrow paler margin* 
glabrous, entire; petals 5, oblong, 4.8 mm. long, united for one-third their 
length, obtuse or rounded, pinkish white, marked with about 5 rows of glandu- 
lar dots and lines, glabrous, Imbricate, dextrorsely covering one another; 
stamens 5, inserted about 0.5 mm. above base of corolla, the subulate glabrous 
filaments 1 mm. long, the oblong anthers 1.7 mm. long, basifixed, dehiscent 
throughout their length, not punctate; ovary ovoid, 1*2 mm. long, glabrous; 
ovules 3, in a single row; style slender, glabrous, 2 mm, long; stigma small, 
subcapitellate. 
Type In the U. S. National Herbarium, no. 989596, collected In light forest 
at Quebradas, Department of Izabal, Guatemala, May 19 to 22, 1919, by H. 
Plttier (no. 8624). 
From the only other species known in Central America north of the Isthmus 
of Panama, Stylogyne laevis (Oerst) Ifes, #, guatemalensis Is distinguished 
by its shorter pedicels, its oblong-oval, entire or aubentirc sepals, and its 
rounded symmetrical petals. 
i 
/ 
BLAKE—NKW PLANTS FROM GUATEMALA AND HONDURAS-  17 
LOGANIACEAE, 
Plocosperma anomalum Blake, sp. nov. 
Shrub 2 to 5 meters high, erectish-branched, the stem and branches {1,2 to 
3 mm, thick) In youth flattened, spreading-puberulous, in age glabrous, sub- 
terete, irregularly ribbed, gray-barked; leaves opposite, those on the older 
branches chiefly borne in pairs on axillary branchlets only 1 mm. long; petioles 
spread ing-puberulous, 1 to 1.5 mm. long; blades elliptic-oblong or oval-oblong, 1.5 
to 4 cm. long, 0.3 to 2 cm. wide, emarginulate, at base rounded and slightly 
unequal, entire, slightly revolute, cbartaceous, above deep green, somewhat 
shining, finely papillose-tuberculate especially near the costa, paplllose-his^ 
pidulous-ciliolate, beneath slightly paler greent in youth evenly but sparsely 
spreading-pilosulous, at maturity glabrous or very sparsely pilosulous, the costa 
immersed above, prominent beneath, the chief veins 2 or 3 pairs, leaving the 
costa below the middle of the leaf and prolonged nearly or quite to apex, like 
the secondary veins conspicuous and subprominulous above, less conspicuous 
beneath; flowers solitary or in pairs at tips of branches and short branchlets, 
the peduncle 1.5 mm. long or usually wanting, the spreading-puberulous 
pedicels 6 to (in fruit) 13 mm, long, erect or in fruit more or less decurved; 
calyx 3 mm. long, 6-parted, the sepals subequal or one slightly the longest, 
lanceolate or lance-oblong, narrowed to an acutish apex, herbaceous, hispidulous- 
ciliate and more or less glandular and hispidulous dorsally, about 0,8 mm, wide; 
corolla purplish magenta, with campanuiate- funnel form tube (6 mm. long), 
and spreading limb about 18 mm. wide, the tube sparsely pubescent on the 
nerves above, the limb ciliate, the 6 rotund lobes about 7 mm. long, 6 mm. wide; 
stamens 6, the filaments slender, glabrous, 4 mm. long, attached 4 mm, above 
base of corolla and decurrent to its base, the oval, deeply cordate, obtuse, dorsl* 
fixed anthers 1.3 mm. long; ovary slenderly ovoid, contracted above the short 
sterile crenulate base and then expanded, about 3 mm. long, 1-celled, 4-ovuled, 
the ovules approximate at base of ovary in decussate pairs, roundish, erectish, 
parietally affixed on very short funicles; style about 6.5 mm. long, glabrous, 
4-fld at apex, the lobes about 2 mm. long, terminated by clavate papillose 
stigmas; fruit fusiform-linear, 8*5 to 9 cm, long, about 2 mm. thick near the mid- 
dle, glabrous, striate-ribbed* apiculate; seeds immature, 
Type in the IT. S. National Herbarium, no* 980586, collected on dry hillside, 
Gualfin, Department of Zacapa, Guatemala, May 26, 1919, by S, F. Blake {no, 
7693). 
ADDITIONAL SPECIMEN EXAMINED: 
GUATEMALA : Gualftn, June 15,1909, Beam 6270. 
This interesting genus was based on Plocosperma buxifolium Benth.,* de- 
scribed without definite locality from Guatemala, where It was collected by 
Skinner. It has apparently not been collected since. The only other species 
of the genus hitherto known, P. microphyUum Baill., has had an unfortunate 
history. It was described at length by Bailion in 1889/ from the "collections 
mexicalnes de Galeotti," but no name was assigned to it. Later it was men- 
tioned by Solereder,8 without explicit reference to Bullion's description, in the 
following terms: " PL wicrophylUtm Baill. MS., in Mexlko, 1st von der ersten 
Art durch bedeutend kleinere B. und BL verschleden." By error, this name 
is cited in the first supplement to the Index Kewensis as P. maorophyllum. 
This species is of special interest, since it resembles P. anomalum in the ar- 
• Hook, Icon. PI. 12: 82. pi 1105. 1876. 
' Bull, Soc. Linn. Paris 1: 780. 1889, 
*In Engl, & Prantl, Pflanzenfam. 4': 50, 189-1. 
18 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
rangement of its ovules. As the publication in which it was described is not 
easily accessible, the original description may be summarized here.—f. micro* 
phpllum Baill. Leaves similar to those of P. buxifolmm, but only 1 cm. long, 
notched at each end, few-nerved, short-petioled; flowers subsesslle, very small, 
41
 un peu plus grandes Que les feuilles " similar to those of P. buxifolium; ovary 
1-celled, with two linear parietal placentae; ovules all basilar and erect, usually 
only one at the base of each placenta, but sometimes two. 
Portions of Deam's plant have been compared at Kew with Bentham's type, 
through the kindness of Dr. Otto Stapf, who reports that they represent a 
different species, that of Bentham having leaves very distinctly pubenilous 
below and not nervose or reticulate, the flowers being much larger, and the 
ovules, as figured in Hooker's Icones, being In superimposed pairs, the lower 
pair erect, the upper pendulous. The flowers of P. buxifolium, moreover, are 
pentamerous. From P, microphyllum Baill. the new species differs in its larger 
leaves and larger longer-pedicellate hexamerous flowers, 
APOCYNACEAE. 
Tabernaemontana amblyblasta Blake, sp. no v. PLATE 6. 
Shrub 5 meters high; branches subterete, glabrous, the younger green, the older 
grayish-barked; leaves opposite; petioles glabrous, sulcate above, 6 to 17 mm* 
long; blades obovate-oblong to oval, elliptic-oblong, or rarely obovate, 7 to 21 
cm* long, 3.5 to 7.5 era. wide, abruptly short-pointed with the tip obtuse at base 
cuneate to rounded-cuneate, entire but somewhat repand, deep green and more 
or less shining above, paler green beneath, glabrous, the costa impressed above, 
prominent beneath, the 11 to 13 pairs of primary veins prominulous beneath; 
panicles axillary, 10 to 18 cm, long (including the 2.5 to 8 cm. long peduncle), 
dichotomously divided, 7 to 14 cm, wide, glabrous; pedicels slender, 7 to 20 mm. 
long; buds obtuse, 8 to 11 mm, long; sepals 5, broadly ovate, broadly rounded 
at apex, 2 mm. long, thickish, with thinner narrow margins, each with a 4 to 8- 
cleft gland at base; corolla tube 9 mm. long, the limb cream-colored or creamy 
yellowish, 12 to 17 mm. wide, the tube broadest near the base, slightly widened 
above the middle at the insertion of the stamens, bearing 5 callosities at the 
apex within alternating with the stamens, the segments of the limb 5, obliquely 
oval-oblong, 8,5 mm, long, 4 mm, wide, rounded at apex, entire; stamens sessile 
at a point 5,5 mm, above the base of the corolla, the lanceolate-acuminate blu- 
ish green anthers 2,5 inm+ long, Included; fruit said to be yellow or green. 
Type in the U, S. National Herbarium, no, 989598, collected on edge of woods 
at Cristina, Department of Izabal, Guatemala, May 23, 1919, by S, F, Blake 
(no. 7636). 
OTHER SPECIMENS EXAMINED: 
GUATEMAI^A: Edge of woods, Los Ainates, Department of Izabal* May 29, 
1919, Blake 7732.   Shore of Lake Izabal, Izabal, Department of Izabal, 
June 2, 1919, Blake 7853. 
HONDURAS : Woods, La Florida to Hacienda Esplritu Santo, Department of 
Copftn, Honduras, May 14, 1919, Blake 7415. 
This species is most closely related to Tabernaemontana longipe* Donn. Smith, 
which has pedicels 4 to S mm, long, acute buds, and a corolla 20 mm, wide, its 
lobes obliquely ovate, strongly excised on one side above* and inequilateral. 
This species, like so many others of its group, bears the varnacular names 
*+ chapupo," "cojfin," "cojfin de gato," and "cojfln de mlco" At Izabal, and 
doubtless elsewhere, the juice Is mixed with chicle for local use; it is also put 
on the flesh, with a piece of tobacco leaf, to draw out carnivorous insect larvae. 
EXPLANATION OP PI*ATE G.—Tabernaemontana amhlyblastat from Blake 7853, Natural 
size. 
\ 
Contr. Nat. Herb,, Vol, 24. PLATE 6. 
TABERNAEMONTANA AMBLYBLASTA BLAKE 
JJLAKE—NEW  PLANTS FROM  GUATEMALA AND HONDURAS.      19 
ASCLEPIADACEAE. 
Metastelma collinum Blake, sp. nov. 
Root thickened, subtuberous, 2 to 3 cm. long, 5 to 10 mm. thick; stems 3 to 5S 
about 0.5 meter long, twining or erectish, very slender, pale green, recurved- 
pilosulous in lines; leaves opposite, about equaling the internodes; petioles 
ciliolate, 1 to 2.5 mm. long; blades linear, 13 to 33 mm. long, 1.2 to 2.2 mm. 
wide, often falcate, acute, rounded at base, more or less revolute, subcoriaceous, 
1-nerved, pale green, sparsely dilate, otherwise essentially glabrous; cymules 
axillary, about 4-flowered, incurved-puberulous, the peduncle and pedicels 1 to 
2 mm. long; calyx 0,8 mm. long, the 5 sepals lance-triangular, obtuse, glabrous 
or rarely with a few cilia; corolla cnmpanuate, whitish, 3 mm. long, the petals 
triangular-ovate, 1.2 mm. wide, united for about one-fourth their length, thicklsb, 
narrowly whitish-margined, especially on one side, and obliquely emarginulate 
at tip, glabrous outside, densely pilose within above the base, toward apex and 
inside margin densely papillose-pilosulous; segments of corona narrowly spatu- 
la te, about 1,8 mm. long, 0.3 mm. wide, obtuse, considerably exceeding the pistil. 
Type in the U. S. National Herbarium, no. 989629, collected on open rocky 
hillsides thinly wooded with pine, along trail from Los Amates to Izabal, De- 
partment of Izabal, Guatemala, May 31,1919, by S, F. Blake (no. 7793). 
Metastelma cottimtm is most nearly related to M. chiapense A. Gray, but dif- 
fers from the description of that species in having the stem pilosulous in lines, 
the leaves all much longer than the cymules, the petals densely pilose within 
below, and the corona segments considerably longer than the pistil. 
BOHAGINACEAE. 
Cordla macrantha Blake, sp, now 
Tree 10 meters high; branches gray-barked, glabrous, lenticellate; leaves 
alternate; petioles glabrous, 7 to 30 mm. long, slender, naked, weakly sulcate 
above; blades elllptlc-oblong or slightly obovate to oval, 7,5 to 15.5 cm. long, 4 to 
8 cm. wide, obtuse or rounded, sometimes emarginate, at base rounded-cuneate 
or cuneate, entire but slightly repand, pergamentaceous, glabrous, above deep 
green, prominulous-reticulate, beneath paler green, prominulous-reticulate, the 
lateral veins 5 to 8 pairs, curved-anastomosing at their tips; panicles terminal, 
7 to 11 cm- long (including the 2 cm. long peduncle), 9 to 12.5 cm. wide, the 
branches wide-spreading, floriferous at their tips and there pubescent and 
glandular; pedicels 2 to 3 mm, long; calyx 14 mm, long, oblong, glabrous, multi- 
stria tula te, obliquely split at apex and there slightly beaked on one side; corolla 
marcescent, slightly pubescent within at base of filaments, the tube about 2,2 
cm. long, pentagonal, the limb about 4.2 cm, wide, the 6 lobes triangular-ovate, 
about 1,5 cm. long, 1.1 cm, wide at base, obtuse, Impressed-veined; stamens 5* 
inserted at apex of the proper tube of corolla, the filaments about 10 mm. long, 
pubescent especially at base; style very sparsely pubescent, 12 mm. long, twice 
bifid, the stigmas capitate; ovary glabrous, oblong, about 10 mm, long. 
Type in the U. S. National Herbarium, no. 989592, collected on dry hillside at 
Quebradas, Department of Izabal, Guatemala, May 18, 1919, by S. F, Blake 
(no. 7498). 
Although the material on which this species is based is scanty, consisting of 
two branchlets bearing old panicles and two old and imperfect flowers, It is 
nevertheless sufficient to show the distinctness of the species. C macrantha 
belongs in the section Varronia, as the genus is divided by Giirke, and may be 
distinguished specifically by its very large marcescent corolla. 
20 CONTRIBUTIONS  FROJI  THE   NATIONAL   HERBARIUM. 
SOLANACEAE, 
Physalis parviculea Blake, sp. no v. 
Much branched spreading annual, the branches up to 30 cm. long, slender, 
striate-angled, somewhat zigzag, whitish, obscurely puberulous in lines on the 
younger parts, otherwise glabrous; leaves alternate or paired, unequal; petioles 
slender, unmargined, sparsely hispid pilose, 2 tn 12 mm. long; blades ovate, the 
larger 11 to 15 mnu long, 7 to 11 mm, wide, obtusish, at base unequal.and trun- 
cate-rounded or slightly cordate, thin, entire, light green on both sides, above 
essentially glabrous except for the hispldulous-puberulous margin, beneath 
eparsely hispidulous with longer hairs chiefly along the 4 or 5 pairs of lateral 
vi ins; flowers solitary, axillary, nodding or deflexed, the pedicels ascending- 
hit^idulous, 1.5 to 2 nun, long in flower, 3 to 4 mm. In fruit; calyx In flower 
i a mpanulate, pentagonal, 3 to 3.5 mm, long, 4 mm, wide, hispid-pilose below, 
10-nerved, 5-toothed, the teeth depressed-deltoid, obtuse, clliolate, 0.8 mm, 
high; corolla yellow with maroon eye, 4 mm. long, 3 mm. wide, shallowly 
54obed with deltoid acutish teeth, clliolate, pilose-barbate within near middle in 
5 spots alternating with the stamens; stamens 5, inserted slightly above base of 
corolla, the somewhat clavate filaments 2 mm, long, villons-barbate within for 
nearly their whole length, the oval bluish anthers 1 mm. long; style glabrous, 
3,5 mm, long; fruiting calyx subglobose-ovold, obtuse, closed at apex, slightly 
sunken at the base, 13 to 14 mm. long, 12 to 14 mm, thick, equally 10-ribbed, 
thin, reticulate-veined, greenish white, sparsely curved-hispidulous on the ribs; 
berry globose, many-seeded, about 7 mm. in diameter. 
Type In the IT. S. National Herbarium, no. 989588, collected in dry river bed 
at Los Amates, Department of Izabal, Guatemala, May 9, 1919, by S, F. Blake 
(no. 7318), 
This species is most closely related to Physalts lagascae glabrescens O. E, 
Schulz and P* micrantha Link. From the former it differs in its smaller calyx, 
small corolla, this pilose-barbate within near base and maroon-eyed, and smaller 
stamens; from the latter in its larger flowering calyx and equally KKribbed 
fruiting calyx. 
Physalis pentagon* Blake, sp. nov. 
Spreading annual, the stoutish, sparsely branched, zigzag stem about 30 cm. 
long, viscid and densely pilosulous with several-celled, straight or curved, 
spreading hairs, dull green; leaves alternate or paired; petioles slender, unmar- 
gined, pilosulous and viscid, 1 to 2 cm. long; blades ovate, 2,3 to 4 cm. long, 1,5 to 
2,5 cm. wide, acute or subacuminate or obtusish, at base very unequal, cuneate 
to broadly rounded, entire, rather thin, dull green, densely puberulous along 
costa and the 4 or 5 pairs of veins above, beneath paler, evenly and rather 
densely pilosulous on surface, densely so on the veins; flowers solitary, axillary, 
the densely grlseous-pilosulous pedicels 5 mm. long in flower, 8 to 10 mm, in 
fruit; calyx in flower 7 mm. long, broadest at the deeply sunken base, gradually 
narrowed toward the apex, densely grlseous-pilosulous, the 5 lance-subulate acu- 
minate teeth 2 mm. long; corolla yellow, 7.5 mm. long, about 5 mm. wide, puberu- 
lous outside and clliolate, essentially glabrous within, the 5 teeth triangular, 
acutish, 1 mm, long; stamens 5, the flattened, sparsely pilose filaments 2.7 mm. 
long, the oblong anthers 2,5 mm. long; style 4.5 mm. long; fruiting calyx sub- 
globose-ovoid, 2.9 cm, long, 2,5 cm. thick, strongly 5-angled with aliform angles, 
abruptly short-pointed with acute tip, closed at apex, sunken at base, rather 
weakly 1-ribbed between the angles, reticulate-venulose, flrm-herbaceous, dull 
pale greenish, rather densely spreading-puberulous, the terminal teeth about 
3 mm. long; berry globose, about 15 mm. in diameter. 
BLAKE—NEW  PLANTS FROM  GUATEMALA AND  HONDURAS.      21 
Type in the U. S. National Herbarium, no. 989569, collected in dry river bed at 
Los Amates, Department of Izabel, Guatemala, May 9,1919,Tby S, P. Blake (no. 
7313)* 
PhpsaUs pentagona differs from P. pubescent L., its nearest ally, in its shorter 
calyx teeth, longer fruiting pedicels, broader, abruptly short-pointed fruiting 
calyx, and much larger berry, 
Solanum calochromum Blake, sp. no v. 
Scandent shrub, glabrous throughout; branches stoutish, somewhat zigzag, 
subterete, glabrous, in youth fuscous-green and lucid, in age gray-barked, the in- 
ternodes 2.5 to 5 cm. long; leaves paired, very unequal, the larger on petioles 1 to 
1-5 cm- long, the blades oblong-elliptic, 13 to 21 cm. long, 4 to 7 cm. wide, acumi- 
nate or abruptly short-acuminate, at base cuneate and often unequal, rather thin-* 
coriaceous, entire but usually slightly repand, glabrous, above deep green, shin- 
ing, beneath scarcely paler green, less shining, the chief lateral veins about 5 
pairs, like the costa prominent, especially beneath, curved-anastomosing toward 
margin, the secondaries loosely reticulate, prominulous, especially beneath; 
smaller leaves of the pairs obovate-oval or suborbicular, short-petioled, 4.5 to 
7.5 cm, long, 2*2 to 5-2 cm, wide, usually short-pointed; flowers about 6, in 
axillary uinbelllform racemes, the axis 3 to 6 mm, long, the slender pedicels 12 
to 17 mm, long, glabrous, slightly thickened above; calyx cup or saucer-shaped, 
truncate, glabrous, 8,5 mm. long, 5 to 7 mm. wide, tblcklsh, with thinner margin; 
corolla bright purple, rotate, 11 mm, long, about 18 mm. wide, the 5 petals united 
for abou% one-fourth their length, elliptic-lanceolate, obtuse, 3 to 5-nerved, hook- 
appendaged at apex within; stamens 5, the flattened filaments 1 mm. long, in- 
serted about 1 mm. above base of corolla, the elliptic-oblong obtuse equal 
anthers coherent, 6 mm. long, cordate at base, opening by small terminal pores; 
berry orange, globose, 7 mm. in diameter, many-seeded* 
Type in the U. S. National Herbarium, no, 989593, collected on edge of woods, 
along trail from Hacienda El Llm6n to El Parafso, Department of CopAn, 
Honduras, May 12, 1919, by S, F+ Blake (no. 7370). 
OTHER SPECIMENS EXAMINED : 
GUATEMALA: Cubilquitz, Department of Alta Verapaz, altitude 350 meters, 
May, 1900, Tiirckkeim 7637; July, 1907, Tnrckheim II. 59. 
Solatium calochromum is related to S* IteterocUtum Sendtn. and S, synanthe- 
rum Sendtn.   The former, however, is described as herbaceous, with corolla 
5-fid to middle, calyx subdentate and membranaceous, anthers free, and pedicels 
8 mm. long; the latter as with membranaceous leaves, and corolla about an 
inch wide when flattened out, 
Solanum solitarium Blake, sp. nov, 
Erectish herb, about 3 meters high; stem greenish, sparsely branched, 
sparsely incurved-pubescent chiefly in lines; leaves mostly paired, unequal or 
subequal; petioles slender, 3 to 15 mm, long, flattened and incurved pubescent 
above; blades oval-ovate or elliptic-ovate, 3.5 to 11 cm. long, 2 to 5.5 cm. wide, 
membranaceous, acuminate and often falcate, at base acutely cuneate, slightly 
decurrent on the petiole, above deep green, incurved-pubescent along the 4 or 5 
pairs of lateral veins, sparsely so on surface or glabrous, beneath scarcely paler 
green, glabrous or rather sparsely incurved-pubescent chiefly along the veins; 
flowers solitary in the upper axils; pedicels glabrous or very sparsely pubescent, 
2,5 to 3.5 cm. long; calyx tube campanulate, 2.5 mm. long, glabrous or very 
sparsely pubescent, truncate and thin-margined at apex, the 10 herbaceous, 
narrowly linear, subulate teeth arising just below its apex, glabrous or very 
sparsely puberulous, 2.5 to 5 mm. long; corolla white, rotate, glabrous, 14 mm, 
long, 5-lobed for two-fifths its length, the lobes obtuse or apiculate; stamens 
22 CONTRIBUTIONS FROM  THE  NATIONAL HERBARIUM, 
5, equal, glabrous, the filaments linear-subulate, 1,2 mm. long, the oblong obtuse 
cordate-based anthers 6.5 mm. long, opening by small terminal pores; style 
slender, equaling the stamens. 
Type in the U. S. National Herbarium, no. 9896Q2t collected in a clearing, 
Rio Mojanales, Department of Izabal, Guatemala, May 17,1919, by S- F. Blake 
(no. 7489). Also collected at the same locality, May 10 to 18, 1919, by H. 
Pittler (no. 8532). 
Solatium solitarium belongs in the group Lobanthes of the section Polymer is, 
as the genus is arranged by Dunal in the Prodromus, It is distinguished by 
the character of its Inflorescence and by its flowers. 
SCROPHULAEIACEAE, 
Russelia flavoviridis Blake, sp, no v. 
Fmtescent, erectish, branched, 1 meter high; stem and branches 6-angled, 
green, glabrous, 1,5 to 3.5 mm, thick, the internodes 2 to 9 cm. long, marked 
above with sessile cup-shaped glands; leaves opposite; petioles 1 to 2 mm. 
long, unraargined, in youth densely barbate-ciliate with white hairs, glabrescent, 
connected by a whitish or rufescent-ciliate ring; blades suborbicular or rhombic- 
suborbicular, 1,7 to 27 cm, long, 1.5 to 1.8 cm, wide, acute or obtuse, at base 
truncate-rounded or rounded, rarely sub cord ate, crenate-serrate above the 
base with 5 to 7 pairs of deltoid acute or obtuse teeth, coriaceous, above green, 
shining, along costa and toward base of the 4 or 5 pairs of veins spreading- 
pilosulous, otherwise glabrous except for the hispidulous-ciliolate* margin, 
beneath pale and usually somewhat yellowish green, glabrous or very sparsely 
pubescent along the nerves, prom inulous-reticulate on both sides and sparsely 
dotted with sessile cup-shaped glands; panicles axillary, short, about 2,5 cm, 
long, about 4 to 10-flowered, dotted with cup-shaped glands, otherwise glabrous; 
pedicels 2 to 5 mm. long; calyx 3 mm, long, dotted with cup-shaped glands, 
5-parted, the lance-ovate segments acuminate; corolla tubular, slightly widened 
above, 12 mm. long, bright red, glabrous outside, rather sparsely pilose within 
on the ventral side, except on the limb, with unicellular hairs, the upper lip 
bifid, 2 mm. long, with rounded lobes, the 3 lower lobes cuneate-quadrate, 
rounded, 3 mm. long; stamens 4, included, the filaments sparsely papillose 
pilose at base, 11,5 and 13 mm, long, the staminode 0.8 mm, long; ovary 1.8 mm. 
long; style 7 mm, long. ' 
Type in the U. S. National Herbarium, no. 989590, collected on an ope" 
rocky hillside thinly wooded with pine, along trail from Los A mates to Izabal, 
Department of Izabal, Guatemala, May 31, 1919, by S, F. Blake (no, 7790), 
This species seems to be most nearly allied to Russelia verticillata H. B. K., 
which has 10-angled branches and flowers 16 to 18 mm. long. 
BIGNOHIACEAE. 
Adenocalymna punctifollum Blake, sp. no?. 
Vine; stem subterete, slender, striatulate, greenish, densely scurfy puberu- 
lous, subglabrate; branches similar, densely crlsp-puberulous and scurfy papil 
lose with griseous or rufescent hairs; leaves opposite, conjugate, the tendril 
often deciduous or wanting; petioles pubescent like the branches, 1.5 to 3 cm. 
long; leaflets 2, the petiolules similarly pubescent, 1 to 2 cm. long; blades oblong- 
ovate or oval-ovate, rather abruptly short-acuminate, at base unequally cordate, 
0.5 to 11 cm. long, 3 to 5.5 cm. wide, chartaceous, above deep green, somewhat 
shining, sparsely pubescent chiefly along the costa and veins with spreading 
rufescent hairs, finely promlnulous-reticulate, beneath duller green, along costa 
BLAKK—NEW  PLANTS FROM GUATEMALA AND  HONDURAS.      23 
and veins sparsely puberulous or short pilose, densely dotted with depressed 
saucer-shaped translucent glands; tendril when present simple, shorter than 
the leaves, pubescent like the petioles; flowers in terminal, sessile, about 4 
flowered panicles* the pedicels 10 to 12 mm* long, densely rufescent-puberulous, 
bearing 2 minute deciduous bractlets above the middle; calyx in bud ellipsoid- 
ovoid, acute, at maturity campanulate, 10 to 13 mm, long, membranaceous- 
herbaceous, densely rufescent-puberulent and sparsely dotted toward apes with 
small, saucer-shaped, pale yellowish glands, split into 2 short lobes, the 5 small 
proper teeth more or less irregularly cohering in groups; corolla 5 cm. long, 
the tul>e and throat yellowish cream color and the limb creamy white, papiilose- 
puberulent outside and on limb within, the tube narrowed above, 1.2 cm, long, 
the narrowly funuelform throat about 2.6 cm. long, the limb about 1.4 cm. 
long, the 5 lobes broadly oval to broadly obovate-oval, rounded, those of the 
upper lip somewhat the longer; fertile stamens 4, inserted at base of throat, the 
glabrous filaments about 12 and 1.8 cm. long, the sparsely pubescent, widely 
divergent anther cells 2.2 mm. long, the connective tipped with 2 short blunt 
glandlike processes; staminode recurved, about 4 mm. long; disk thick, ring- 
form, about 1 mm. long; pistil 3 cm. long, the ovary 3 mm, long, densely lepidote, 
compressed contrary to the partition, the ovules about 40 in each cell, sub 
blseriate on each side of the partition; style glabrous, 2.5 cm. long; stigma 2 mm. 
long. 
Type in the U. S. National Herbarium, no. 989627, collected in bushes at 
Quebradas, Department of Izabal, Guatemala, May 19 to 22, 1919, by H. Pittier 
(no. 8570). Alsd collected at the same locality on May 18, 1919, by S, F, Blake 
(no. 7502). 
In its densely punctate leaves this species suggests the genus Stizophyllum, 
but It has a different calyx. It is closely related to Adcnocalymna flos-ardeae 
Pittier, of Panama, which has similarly punctate but larger leaves, more densely 
pubescent on the veins beneath, and a different arrangement of the flowers. 
Cydista pubescens Blake, sp. nov. 
Shrubby vine; stem stout, sub terete, glabrous, grayish-barked; branches dark 
fuscous, subterete, striatulate, glabrous or very rarely with a few spreading 
hairs, sparsely scaly-glandular; leaves opposite, conjugate, terminated by a 
usually persistent tendril; stipules wanting; petioles stoutish, 2.5 to 3.5 cm, 
long, subterete, spreading-pubescent chiefly on the upper side with dull hairs, 
and scaly-glandular, in age sometimes glabrate; leaflets 2, the petiolules similar 
to the petiole, 1.3 to 2.5 cm, long; blades usually suborbicular ovate, sometimes 
ovate, 7.5 to 13 cm. long, 4.5 to 11 cm. wide, abruptly short-pointed or acute, the 
apex obtuse or acute, mucronulate, at base broadly rounded, pergamentaceous 
to suhcorlaceous, deep green, shining above, sparsely spreading-puberulous or 
pubescent with curved hairs, chiefly along the costa, and scaly-glandular, sub* 
glabrate, beneath dull, rather densely spreading-pubescent over whole surface or 
only along the veins with loose, dull, many-celled hairs, and scaly-glandular, 
prominulous-recticulate on both sides, the chief lateral veins 3 to 5 pairs; 
tendril glabrous, about as long as the leaflets, simple; panicles in threes termi- 
nating stems and branches, trichotomous, scaly-glandular, rather few-flowered, 
the peduncle 3 to 6 cm. long, the branches erect, the pedicels 7 to 11 mm. long, 
the bracts spatulate, about 9 mm. long, the bractlets subulate, minute; calyx 
campanula te, 7 mm. long, minutely 5-toothed at the truncate apex, coriaceous, 
densely scaly-glandular, obscurely ciliolate; corolla upinkish white" 4.8 to 
6 cm, long, densely papillose-glandular outside and on the limb and within on the 
ventral surface, the tube 7 to 9 mm. long, the campanulate-funnelform throat 
24 CONTRIBUTIONS  FROM  THE  NATIONAL  HERBARIUM. 
2 to 2.7 cm, long, the limb 1.5 to 2.3 cm^ long, the 5 broadly rounded sub- 
orbicular lobes somewhat fluted; fertile stamens 4, glabrous, the filaments about 
1.2 and 1,8 cm. long, the divergent anther cells 4 mm, long, the linear staminode 
about 1.2 cm. long; pistil 2.7 cm. long; disk obscure; ovary 4 mm. long, densely 
scaly-glandular, the ovules in each cell In 2 rows of about 15 each, the style 1*8 
to 2 cm. long, the stigmas lobes rhombic-ovate, acute; pod linear, compressed 
parallel to the partition, 38 to 45 cm. long, 2 cm. wide, scaly-glandular; seeds 
6,5 long, 1,5 cm. wide, the entire wings scarious only at apex. 
Type in the U, S. National Herbarium, no. 989615, collected at La Florida, 
Department of Cop&n, Honduras, May 10, 1919, by H. Pittier (no. 8488). 
OTHER SPECIMENS EXAMINED: 
TKPIC : Near Acaponeta, July, 1897, Rose 1527, 3283. 
GUATEMALA: Rfo de La Paz, Department Jutiapa,  altitude 960 meters, 
July, 1894, Heyde & Lux 6363.   Barranquillo, Department El Progreso, 
altitude 545 meters, April, 1920, Popenoe 980, 
NICARAGUA: Sapoa,  Department Rivas,  altitude 35  meters, April,  1893, 
Shannon 5049. 
COSTA RICA: Liberia, Province Ouanacaste, altitude 120  meters,  April, 
1893, Shannon 5048. 
PANAMA : PemmomG and vicinity, 1908, Williams 228. 
This species is close to Cydista aequinoctiaUs (L,) Miers, but may be dis- 
tinguished by its usually dense pubescence, C. aequinoctiaUs being entirely 
glabrous. The native name of C* puhescens is given as " ito " by Mr, Pittier, 
and as " campana " by Mr. Popenoe. The specimens here clt&d, excluding the 
type, were all distributed as C. aequinoctiaUs, with the exception of no. 6363, 
which was referred to Melloa popuUfolia Bureau, 
Macfadyena guatemalensis Blake, sp. nov. 
Shrubby vine; stem subterete, slender, gray-barked, glabrous; leaves opposite, 
conjugate, the tendril deciduous; stipules obsolete; petioles terete, striatulate, 
densely griseous-puberulous with spreading hairs, 2.5 to 2,8 cm. long; leaflets 
2, the petlolules similar to the petiole, 1.5 cm. long; blades oval, 12 to 14 cm. 
long, 5 to 6.5 cm. wide, short-acuminate, cuneate-rounded at base, chartaceous, 
above deep green, somewhat shining, finely puberulous chiefly along the costa, 
very loosely reticulate with scarcely prominulous veinlets, beneath dull green, 
evenly but not densely pubescent with spreading whitish hairs, the whitish 
lateral veins about 6 pairs, prominent, the prominulous secondaries very loosely 
reticulate;  tendril not seen;  inflorescence of one or two about 8-flowered 
racemes terminating a lateral branchlet, the axis 1 to 1.5 cm, long, sparsely 
pubescent,  the persistent bractlets subulate,  about  1.5  mm.   long;  pedicels 
glabrous. 10 mm* long; calyx campanulate, 15 to 19 mm, long, thin, coriaceous, 
dark green, glabrous, split half its length on the lower side, bearing a few 
saucer-shaped glands at base; corolla yellow, drying blackish green, 5*5 to 
6 cm, long, thin-coriaceous, glabrous, the tube 1.5 cm, long, narrowed above, 
the funnelform throat 3 to 3,5 cm. long, the limb 1 to 1.5 cm, long, the 5 lobes 
depressed-orbicular, broadly rounded, plane;  fertile stamens 4, glabrous, the 
thickish filaments about 1,6 and 2.4 cm. long, the widely divergent anther cells 
3,5 mm.  long,  the slender lanceolate-tipped  staminode  about  6  mm.  long; 
disk thick, cupuliform, about 2 mm* high; pistil 4 cm, long; ovary slenderly 
ovoid, 5 mm. long, densely lepldote, compressed parallel to the partition, the 
ovules in about 6 pairs in each cell, definitely 1-rowed on each side of placenta. 
Type in the XL S. National Herbarium, no. 989601, collected along the bank 
of the Rio Izabal, Izabal, Department of Izabal, Guatemala, June 1, 1919, by 
K K Blake (no. 7845). 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS*     25 
Maefadyena guatemalensis is apparently the first true member 6t the genus 
to be reported from north of the Isthmus of Panama. It seems from description 
to be most closely allied to M* mollia tSond.) Seem,, but differs in its glabrous 
pedicels and corolla, and In various other characters. 
ACANTHACEAE. 
Siphonoglossa discolor Blake, sp. nov. 
Herbaceous perennial, the stems several, branched, ascending, about 45 cm, 
long and 1.5 mm. thick, dull green, terete, sulcate, obscurely puberulous with 
incurved hairs, the intern odes of the main stems 2 to 6.5 cm, long; leaves 
opposite; petioles slender* naked, puberulous, 3 to 5 mm. long; blades obovate* 
spatulate-obovate, rotund-obovate, or rarely elliptic, 11 to 22 mm. long, 6 to 11 
mm, wide, broadly rounded, obtuse, or rarely acutish, apiculate, at base acutely 
cuneate, herbaceous-papyraceous, entire, sometimes somewhat repand, above 
deep green, in youth somewhat pubescent, in maturity glabrate except for the 
hispid ulous-ciliolate margin and the sometimes pubescent costa, beneath paler 
and yellowish-green, permanently hispidulous-pilosulous chiefly along the veins, 
cystolithigerous on both sides, the lateral veins about 3 pairs, obscure above, 
prominulous beneath; flowers in twos or threes In the axils of foliage leaves, 
subsesslle ;bractlets 2, lance-subulate, incurved-puberulous and eiliolate, 2 mm. 
long; calyx 4-parted, the segments lance-linear-subulate, equal, 4 mm. long, 
eiliolate and puberulous; corolla magenta, 2,4 cm, long, spreading-pllosulous 
throughout, sparsely so toward apex of limb, the slender cylindric tube 16 mm. 
long, about 0.8 mm. in diameter, the throat short, about 2 mm, long, somewhat 
ampliate, the oblong-ovate obtuse porrect upper lip 6 mm, long, about 2 mm. 
wide, the spreading lower lip 6.5 mm. long, about 10 mm. wide, 3-lobed, the 
lobes obovate-oval, rounded, subequal, 5 mm. long, 3,3 mm, wide; stamens 2, 
inserted at apex of throat, the glabrous filaments 3 mm, long, the connective 
somewhat  dilated,   the  elliptic-oblong  glabrous  anther  cells  unequal,   sub- 
parallel , oppositely inserted, obtuse at both ends, unequal, 0,8 to 0,9 and 1*1 to 
1,2 mm. long; disk prominent, fleshy, cup-shaped, about 0,3 mm, high, subenttre; 
ovary 1.2 mm, long, cylindric-ovoid, pilosulous above, 2-celled, with 2 ovules in 
each cell; style slender, pilosulous to above the middle, 2 cm. long; capsule 
clavate, spreading-puberulous, 1 cm, long, 4-seeded, the sterile stipelike base 
nearly equaling the fertile portion;  seeds brownish, suborbicolar, flattened, 
verrucose, 2.5 mm, long. 
Type in the U, S. National Herbarium, no. 988619, collected on edge of 
thicket at Gualfln, Department of Zacapa, Guatemala, May 26* 1919, by S. F. 
Blake (no. 7669), 
This species may be recognized by its obovnte discolorous leaves and fine 
puberulence. 
THanthera rlparia Blake, sp. nov. 
Erect perennial herb, 60 to 70 cm. high, sparsely branched; stem slender, 
dark green, pilose or pilosulous in lines with spreading or recurved hairs; 
leaves opposite; petioles slender, glabrous, barely margined, 4 to 13 mm. long; 
blades elliptic or lance-elliptic, 9 to 14 cm, long, 2 to 4 cm, wide, attenuate and 
usually falcate, at base acuminte into the petiole, repand, membranous, gla- 
brous and cystolithigerous on both sides, deep green above, slightly paler green 
beneath, the costa sulcate above, prominent beneath, the 4 or 5 pairs of lateral 
veins curved-anastomosing at tip, prominulous especially beneath; spikes axil- 
lary and solitary, few, borne near tip of stem, pilose or pilosulous in lines, 
very slender, 12 to 17 Cm. long, on a peduncle 4 cm, long or less, the internodes 
26 CONTRIBUTIONS FROM THE NATIONAL HERBABIUM. 
1 cm, long, the flowers opposite at the nodes; bracts lance-subulate, attenuate 
from an ovate, sparsely ciliate base, 3 mm, long; bractlets 2, similar but nar- 
rower and not dilate, slightly shorter; sepals 4, lance-linear-subulate, attenuate, 
sparsely clliolate or subglabrous, 5,5 mm. long; corolla glabrous, 17 mm. long, 
white, the lip marked or lined with violet or magenta-purple, the upper lip 
pale magenta within, the tube 9 mm. long, the upper lip ovate, obtuse, obtusely 
bidenticulate, 6 mm. long, 2.5 to 3,5 mm. wide, the lower lip 8.5 mm. long, 6.5 
to 8 mm, wide, bearing 2 longitudinal folds about 1.2 mm, high, Its 3 rounded 
subequal lobes about 2 mm. long; stamens 2, inserted at apex of tube, the gla- 
brous filaments 4 mm. long, the connective strongly and obliquely dilated, the 
anther cells very oblique, obtuse at each end, glabrous, the lower 0*8 mm, long, 
the upper 1 mm, long; capsule 4-seeded, glabrous, 12 mm, long, about 1*5 mm. 
wide, the stipe equaling the fertile portion; seeds brownish black, papillose, 
2.2 mm, long. 
Type in the U. S. National Herbarium, no* 980620, collected along stream on 
trail from Los Amates to Izabal, Department of Izabal, Guatemala, May 81, 
1918, by S. F. Blake (no. 7800). 
ADDITIONAL SPECIMEN EXAMINED: 
QUATEMAIA: Thickets along Rio Techtn, Department of Izabal, May 17, 
1919, Blake 7491. 
This species is closely related to Dianthera breviflora (Nees) HemsL, which 
is described as having broader leaves with 8 or 9 parrs of lateral veins, rather 
dense subsesslle spike, glabrous bracts, bractlets, and calyx, and smaller carolla, 
with the sepals (6 mm. long) equaling the corolla tube. Dr. Stapf writes mo 
that the type (Linden 184) of Rhytiglosm breviflora Nees, in the Kew Herba- 
rium, has a corolla measuring 15 mm, to the tip of the ventral lip, 12 mm. to 
the tip of the dorsal Up, with the glabrous tube 5 mm, long. 
CUCTTRBITACEAE. 
Anguria aurantiaca Blake, sp. nov* 
Herbaceous twiner; stem fuscous, striate, about 3 mm, thick, finely spreading- 
puberulous; tendrils opposite the leaves, spreading-puberulous, glabrescent; 
leaves alternate, trifollolate; petioles stoutisb* finely spreading puberulous 
5 to 5,5 cm. long; petiolules naked, 4 to 7 mm. long; blades of the lateral leaf- 
lets obliquely broad-ovate, 2-parted nearly to base, the lower lobe ovate, strongly 
inequilateral, acute or short-acuminate, broadly rounded on lower side and there 
with a blunt tooth toward the base, otherwise subentire, 7 to 9 cm, long, 3,5 to 
4 cm. wide, above dull green, glabrous, pustulose along the nerves, beneath 
somewhat paler green* obscurely puberulous along the nerves, the upper lobe 
subequilateral, 11.5 to 18,5 cm* long, 5 to 6 cm. wide, with a large tooth on the 
lower side near middle and slightly sinuate-denticulate; middle leaflet rhombic- 
obovate, 13 to 14*5 cm. long, 5,5 to 7 cm. wide, short-acuminate, cuneate at base, 
sinuate-denticulate, equilateral, the lateral veins about 6 pairs, prominulous on 
both sides; peduncle of the staminate spike axillary, slender, striate, essen- 
tially glabrous, 20 cm. long; staminate spike about 18-flowered, its axis 5 to 7 
mm, long; flowers sessile; calyx oblong-cylindric, glabrous, the tube 11 mm. 
long, about 2.5 mm. thick, the 5 triangular acute teeth 2 mm. long; petals 5, 
orange, rhomblc-obovate to rhomblc-suborblcular, 4 ram. long, 3.5 mm. wide, 
densely puberulous on both sides; stamens 2, linear-elliptic, 7.5 mm, long, 
straight, dorsally affixed, the papillose obtuse appendage about 0,2 mm. long. 
Type in the U. S. National Herbarium, no. 989585, collected on edge of trail 
from Hacienda El LimSn to El Par also, Department of Copfin, Honduras, May 
12, 1919, by S. F, Blake (no. 7355). 
Contr. NuL Herb., Vol. 24. PLATE 7- 
CAYAPONIA MICRODONTA BLAKE: 
Contr. Nat. Herh., Vol. 24. PLATE 8 
SCLEROCARPUS PHYLLOCEPHALUS BLAKE 
-ry^r 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS*     27 
This species enters the third group of the genus in Cognlaux's monograph, 
and Is readily distinguished by its very small petals and the dimensions of its 
leaves and calyx 
Cayaponla mlcrodonta Blake, sp. nov> - PLATE 7. 
Twining herb; stem slender, about 1.5 mm. thick, strtate-angled, densely and 
finely glandular-tuberculate, sparsely branched; tendrils opposite the leaves, 
slender, striate-angled, about 10 cm, long; leaves alternate; petioles striate, 
marglnate above, finely subglandular-papillose, the naked portion 1 cm. long; 
blades broadly ovate in outline, 3-lobed about to middle, 7 to 10 cm, long, 6.5 to 
8.5 cm. wide, at base broadly rounded and narrowly decurrent into the petiole 
for about 3 to 10 mm,, the lobes obtuse or emarginulate and often mucronulate, 
the blade papyraceous, above deep green and slightly shining, evenly papillose- 
tuberculate and hispidulous with soon deciduous hairs, along the nerves tuber- 
culate-hlspidulous, beneath scarcely paler green, densely papillose-tuberculate 
and glandullferous, along the veins very sparsely hispidulous, the free portions 
of the lobes ovate, obscurely denticulate, the lateral lobes about 2 cm, long 
and wide or rarely obsolescent, the terminal about 6 cm. long, 3.2 to 4 cm, wide, 
the decurrent portion of the blade marked with large crater-shaped glands; 
staminate flowers solitary In the axils, on striate* obscurely tuberculate pedun- 
cles 2 to 3.5 cm, long; calyx campanulate, the tube 14 mm. long, 12 mm, wide, 
puberulous in a ring at extreme base, sparsely tuberculate-hispidulous, outside 
hispidulous-clliolate, long-pilose within, the 5 triangular acute teeth 1.5 mm. 
high; corolla cream color with yellow center, the 5 petals inserted near the apex 
of the calyx tube, oblong-oval or obovate-oval, 15 mm. long, 8 mm, wide, densely 
and sordidly paplllose-puberulous with subglandular hairs on both sides, long- 
pilose toward base within; stamens 3, the pilose filaments about 4 mm. long, 
the reduplicate connate anthers 11 mm. long, the connectives prolonged into 
oblong obtuse pilose appendages about 2 mm. long; ovary rudiment none. 
Type In the U. S, National Herbarium, no, 989025, collected on edge of woods, 
Los Amates, Department of Izabal,' Guatemala, May 29, 1919, by S, F. Blake 
(no. 7730), 
Closest to Cayaponia maarantha Fit tier, of Costa Rica, which has more 
deeply lobed leaves with more sinuate margin, longer peduncles, and calyx 
teeth 2 to 3 mm. long. 
EXPLANATION OF PLATE 7.—Cayaponia microdontaM from the type specimen. Natural 
size. 
ASTERACEAE, 
Sclerocarpus phyllocephalus Blake, sp. nov. PLATE 8. 
Erect annual with assurgent branches, or assurgent, 16 to 32 cm+ long, the 
branches sometimes exceeding the main stem, opposite below, alternate above, 
like the stem greenish or fuscous* in youth densely hispid-pilose with spreading 
subtuberculate-based hairs, in age subglabrescent; leaves opposite below, alter* 
nate above; petioles hispid-pilose with ascending or somewhat spreading hairs, 
naked or slightly margined, 5 to 26 mm, long; blades ovate or lance-ovate, 2 to 8 
cm. long, 1 to 4 cm. wide, acuminate, at base cuneately narrowed into the petiole, 
serrate with 6 to 12 pairs of obtusish, often depressed teeth, above dull green, 
rather densely hispid-pilose with ascending roughish hairs, beneath in youth 
densely subappressed-hispld-pilose with flavescent-griseous hairs, at maturity 
griseous; heads solitary at tips of stem and branches, 11 to 16 mm. wide, on 
peduncles 1 to 11-5 cm. long; Involucre of 6 very unequal, 1-seriate, foliaeeous, 
spatulate to oblong-ovate, entire or serrate, petlolulate phyllarles, 6 to 20 mm. 
long, 1,8 to 7 mm. wide; involucre subtended at base by 2 or 3 ovate serrate 
28 CONTRIBUTIONS FROM  THE NATIONAL HERBARIUM, 
bracts up to 5 cm, long, precisely similar to the leaves; rays 6* neutral, orange or 
orange-yellow, the pubescent tube 2 mm* long, the suborbicular emarginate limb 
4 to 6*5 mm, long, 4 to 5 mm, wide; disk fertile, the corollas orange or orange- 
yellow, 6.8 to 8.5 mm. long, slender-ftmnelform, hispid-pilose above, the teeth 
lanceolate, 2 mm. long, bearing a tuft of deeper-colored hairs within near the 
apex; fruits all beaked, strigillose, bent, 6 mm. long, the body obovoid, 8.5 to 
4 mm. long, ribbed and bluntly tubercled on the back and sides, the beak about 
2 mm. long; achene obliquely obovoid, 3 to 3.5 mm, long, glabrous, dark grayish, 
strlate, epappose, 
Type in the U. S. National Herbarium, no. 989587, collected on railroad em- 
bankment at Cristina, Department of Izabal, Guatemala, May 23, 1919, by S. 
F. Blake (no. 7648).   Also collected at the same place and date under no. 7642. 
This new species is most closely related to Sclerocarpus major Small, which 
has pappose achenes, rays with lamina 1.8 to 2 cm. long, and corolla teeth 5 
mm, long. It is at once distinguished from £. divaricatus (Benth.) Benth. 
& Hook, and 8. orcuttii Greenm. by the fact that all Its fruits are beaked, while 
in these species the outer fruits are not beaked although sometimes hooded. 
JOXPLANATION Off PLATE 8.—Scterooarpu* phytlooephalus, from the type specimen* 
Natural size. 
Wedelia parviceps Blake, sp. nov, PLATE 9. 
SufCrutescent or frutescent, or sometimes herbaceous, erect or ascending, 
usually much branched, 0,6 to 1,3 meters high, from a tuberous-thickened root 
1 to 1.5 cm. thick; stem and branches slender, densely and harshly tuberculate 
hispid ulous, glandular and usually spreading-hispid; leaves opposite through - 
out; petioles tuberculate-hispid and hispidulous, naked, 2 to 6 mm. long; blades 
lance-ovate to elliptic-ovate or ovate, 2 to 6 cm. long, 8 to 20 mm. wide (those 
of the branches smaller), acute or acuminate, cuneate or rounded-cuneate at 
base, serrulate with 6 to 10 pairs of depressed obtuse or acute teeth or sub- 
entire, firmly herbaceous, above dull green, evenly and harshly hispidulous and 
ascending-hispid, the larger hairs tuberculate-based, beneath slightly paler 
green, evenly hispidulous on the surface, on the veins ascending-hispid, tripli- 
nerved; heads 10 mm, wide, solitary or usually in threes, axillary and terminal, 
on densely hispidulous and more sparsely spreading-hispid pedicels 1 to 4.5 cm, 
long; disk campannlate, 6 to 7 mm. high, 3 to 5 mm, wide; involucre 3-5 to 6 
mm. high, 3 or 4-seriate, subequal or graduated, ascending-hispid-pilose and 
dilate, the phyllaries with indurate base and shorter, rather abruptly nar- 
rower, obtuse or acutish, somewhat spreading, herbaceous tips; rays 6, yellow, 
fertile, obtusely bidentate, the lamina oval, hispidulous dorsally, 4 mm. long, 
2.5 mm* wide; disk flowers about 9r the corollas yellow, hispid at apex of tube, 
hispidulous on the teeth, 4 mm. long (tube 1.8 mm., throat narrow-funnelform, 
1.9 mm., teeth 0.8 mm,) ; pales obtuse, scarlous, hispidulous above, 5 mm, long; 
ray achenes with denticulate coroniform pappus cup 0.5 mm. high; disk achenes 
oblong, thickened but somewhat compressed, 4-angled, grayish, glabrous, 3.5 
mm, long, 2.3 mm, wide; pappus a narrow denticulate cup 0.5 mm, high, in the 
ovary provided on the inner side with an awn or tooth 1 mm. high or less, 
this lost at maturity. 
Type in the U. S. National Herbarium, no, 989584, collected on dried river's 
edge at Gual&n, Department of Zacapa, Guatemala, May 26, 1919, by S. F, 
Blake (no. 7681). 
OTHER SPECIMENS EXAMINED : 
GUATEMALA : Open hillsides wooded with pine, along trail from Los Amatea 
to Izabal, May 31, 1919, Blake 7782.   Secanqulm, March 29, 1902, Cook 
& Qriggs 301.   Near Secaqufm, trail to Calmbfin, November 25, 1904, 
Goll 53, 
Contr. Nat. Herb., Vol. 24. PLATE 9. 
WEDEUA PARVICEPS BLAKE 
;l»   ■/-"- 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS*     29 
HONDURAS ; Open hillsides wooded with pine, along trail from La Florida 
to Hacienda Espiritu Santo, Department of CopAn, May 14, 1919, 
Blake 7426. 
NICARAGUA: In pine woods, San Rafael del Norte, altitude 1,200 to 1350 
meters, March 25 or 26, 1917, Miller d Oriscom 56, 02, 94. 
PANAMA : Common in pastures around El Boquete, ChiriquI, altitude 1,000 
to 1,300 meters, March 2, 1911, Pittier 2867.   In savannas, Cerro Yaca, 
eastern Chiriqui, altitude ©00 to 1,130 meters, December 25 to 28, 
1911, Pittier 4346. 
Wedelia parviceps is easily distinguished by its very small heads. 
EXPLANATION OF FLATS 9.—WedeUa parviceps> from Blake 7426.   Nearly natural size, 
Melanthera hastlfolia Blake, sp. nov* FIGUBE 3. 
Erect or ascending, herbaceous, branched, about 2.5 meters high; stem 
stout, 7 mm, thick, subquadrangular, strlate, whitish, immaculate, strigillose; 
leaves opposite; petioles slender, naked, strigose and 
sparsely hispid, connected at base by a hispidulous ring, 
those of the main stem leaves 2 to 2,5 cm, long, those of 
the branch leaves 1 cm. long; blades of the stem leaves 
oblong-obovate or oblong, widest at base and there with a 
spreading hastate lobe on each side, contracted above 
the lobes and then widened, 9 to 11 cm. long, 3,5 to 5 cm. 
wide at base across the lobes, 2 to 3 cm, wide above the 
middle, acuminate, at base subtruncate, then shortly cune- 
ate into the petiole, irregularly serrate-dentate with 20 to 
30 pairs of triangular acute teeth, above deep green, slightly 
lucid, harshly tuberculate-hispidulous and along the veins 
ascending-hispid, beneath slightly paler green, hispidulous 
with incurved-ascending hairs and along the veins ascend- 
ing-hispid, pinnate-veined, the costa and the 8 or 9 pairs 
of curved-anastomosing lateral veins and the secondaries 
promlnulous-reticulate beneath; branch leaves similar but 
smaller and often not hastate at base, the blades 4 to 6.5 
cm. long, 1 to 1-5 cm. wide; peduncles axillary and terminal, 
strlate, strigillose, 4 to 9 cm. long, or rarely very short; 
heads 15 mm. wide in flower, 7 mm. high, in fruit 11 to 12 
mm, wide, 7 mm. high; Involucre S-seriate, equal or sub- 
equal, 4,5 to 5 mm. high, the phyllaries oblong-ovate, acute, 
1.5 to 2 mm. wide, densely strigose and more or less hispid- 
ciliate, appressed, indurate and pale below, the upper half 
or only the tip subherbficeous; rays none; disk corollas 
white, tuberculate-hispidulous on the teeth, 5,5 mm. long 
(tube 1.2 mm., throat 3 mm., teeth triangular, 1.3 mm.); pales abruptly acumi- 
nate, strigillose and dull greenish above, 5*5 to 6.5 mm. long; achenes plump* 
obovoid, subquadrangular, 2.5 mm. long, blackish, hispidulous at apex; awns 2 
or 3, unequal, 0,5 to 2 mm. long, caducous; squamellaoeous corona obscure. 
Type in the U. S, National Herbarium, no. 989633, collected in ditch along 
railroad at Orlstina, Department of Izabal, Guatemala, May 22, 1919, by S. F. 
Blake (no. 7601A). 
I refer also to this species, but with some doubt, a collection made at the 
same place and date (no. 7588), in which the leaves are lanceolate or elliptic- 
lanceolate, obscurely or not hastate, and not contracted above the base. These 
plants bear the vernacular name " flor de la vida." 
Melanthera hastifolia is allied to M. nivea (L.) Small, but may be dis- 
tinguished by its foliar characters. 
Fia. 3- — JfeJan- 
thera hastifolia. 
A leaf of the type 
specimen. One- 
half natural else. 
30 CONTRIBUTIONS FBOM  THE  NATIONAL  HERBARIUM. 
lir 
FIG, 4,—Me- 
tanthera 
linearte, 
A leaf of 
the type 
specimen. 
One-half 
natural 
size. 
Helanthera llnearis Blake, sp, nov. FIGURE 4. 
Erect or ascending herbaceous perennial, 1 meter high, sparsely branched* 
the stem slender, about 2.5 mm. thick, quadrangular, purplish-maculate, strigil- 
lose ; leaves opposite, alternate In the inflorescence; petioles slen- 
der, uumargined, strigillose, those of the main leaves 5 to 10 mm. 
long; blades linear or the lower narrowly linear-oblanceolate, 
5 to 9 cm. long, 4 to 7 mm, wide, acute at each end, serrate with 
8 to 1ft pairs of appressed obtuse teeth, above dark dull green, 
tuberculate strigillose, beneath somewhat paler green, evenly but 
not densely strigillose, along the costa and the 6 to 13 pairs of 
slightly promtnulous lateral veins short-hispid with barely ascend- 
ing hairs; peduncles few, solitary in the axils and terminal, strig- 
illose, slender, naked or 1-bracteolate, 6 to 14.5 cm. long; disk 
12 mm. wide in flower, 6 mm, high, in fruit 6 mm, high, 0 mm, 
in diameter; Involucre about 3-seriate, 3 to 3.5 mm. high, gradu- 
ated, the phyllaries oval, obtuse or rounded, obscurely mucronu- 
late, appressed, griseous-strlgillose, indurate, with short sub- 
herbaceous tip; rays none; disk corollas white, tuberculate- 
hlspldulous above, 4 mm. long (tube 0,7 mm., throat 2.6 mm,, 
teeth triangular, 0.7 mm.) ; pales strigillose, barely acute, 3.5 mm, 
long; achenes plump, blackish, 2.2 mm. long, essentially glabrous; 
awns 2, unequal, caducous, 0,8 to 1.7 mm. long; squamellae obscure. 
Type in the U. S. National Herbarium, no- 089632, collected iu 
ditch along railroad at CristIna, Department of Izabal, Guate- 
mala, May 22, 1919, by S. F. Blake (no. 7601), 
This species is related to MeXa^thera angustifolia A. Rich., but Is to be sep- 
arated by its smaller heads with shorter blunt phyllaries and pales. 
Otopappus asperulus Blake, sp, nov. PLATE 10. 
Slender scandent shrub; stem terete, striatulate, about 2 mm. thick, grayish, 
densely and harshly tuberculate-hispldulous with spreading hairs, subglabrate; 
branches fuscous, very densely and harshly spreading-bispidulous; leaves op- 
posite ; petioles 2 to 3 mm. long, spreading-short-hispid; blades ovate-lanceolate, 
5,5 to 8 cm. long, 1,2 to 2*5 cm. wide, acuminate, often somewhat falcate, at 
base rounded, serrulate with 5 to 13 pairs of depressed mucronulate teeth, 
snbpapyraceons, above dark dull green, rather sparsely and harshly hispidulous 
and short-hispid with lepidote-based ascending hairs, glabrescent, beneath 
rather sparsely hispidulous and short-hispid with mostly tuberculate-based 
hairs, these longer along the veins, triplinerved from near the base, the veins 
impressed above, like the secondaries prominulous beneath; heads about 12 
mm. wide, campanulate, in axillary and terminal corymbs of 2 to 4, mostly 
shorter than the leaves; bracts spatulate, about 6 mm, long; pedicels densely 
hispidulous, usually about 5 mm. long, rarely up to 1 cm, long; disk in fruit 
8 mm. high, about 10 mm. wide; involucre 5 mm. high, about 5-seriate, gradu- 
ated, grlBeou&atrigillose, the 2 or 3 outer series of phyllaries narrowly oblong, 
indurate, with reflexed spatulate herbaceous tips 0,8 to 3 mm. long, the inner 
indurate, oblong or oblong-oval, obtuse, appressed; rays 10, fertile, yellow, the 
lamina elliptic, 4 to 4.5 mm. long, 1 to 1-2 mm, wide, 3-dentate, hispidulous on 
nerves and teeth; disk corollas yellow, hispidulous on tube and teeth, 5 mm. 
long (tube 1.5 mm., teeth 0.8 mm.) ; pales acuminate, stiff, persistent hispidu- 
lous on back and above, 6 to 7 mm. long; disk achenes black, obovoid 
compressed, striate, 3 to 3.5 mm. long, 1 mm. wide, narrowly white-winged on 
one side  (wing about 0.2 mm, wide), broadly  winged  above on  the other 
Contr. Nat. Herb.. Vol. 24. PLATE 10 
OTOPAPPUS ASPERULUS BLAKE. 
BLAKE—NEW PLANTS FROM GUATEMALA AND HONDURAS.      31 
(wing 1 mm. wide), the wings united with the pappus, the narrower passing 
into a slender free awn 1 mm. long, the broader adnate throughout Its length 
to an awn 2.8 mm, long; pappus corona denticulate, 1 mm, high, of completely 
united squamellae, adnate to the awns of the pappus. 
Type in the U. S. National Herbarium, no, 089617, collected along banks of 
brook, Hacienda La Zumbadora, between El Paratso and La Florida, Depart- 
ment of CopAn, Honduras, May 13, 1919, by S. F. Blake (no, 7400), 
Tliis species is easily distinguished by its fine harsh pubescence and by the 
shape of its leaves* 
EXPLANATION OF FLATS 10.—Otopappu* asperulus, from tbe type specimen.   Natural size. 
Iiiabum subglandulare Blake, sp. nov. 
Shrub 3 meters high; stem stout, oppositely branched, 8 mm, thick above, 
grayish, densely sordid-puberulous with spreading hairs, subglabrescent; young 
branches densely and sordidly tomentose-puberulous; leaves opposite; petioles 
slender, naked, sordid-puberulous especially beneath, 1,5 to 2.5 cm, long; 
blades (immature) ovate or lance-ovate, 5 to 8 cm. long, 2,5 to 3.5 cm. wide, 
acuminate, cuneately narrowed into the petiole, subentire or obscurely repand- 
denticulate, subchartaceous, above deep dull green, evenly hispidulous-puberu- 
tous with subglandular-based hairs but scarcely roughish, ciliolate with sub- 
glandular hairs, beneath griseous-canescently arachnoid-pilose and beneath the 
hairs densely glandular puber u lous with lucid brownish glands, glandular- 
pubescent along the veins, 3-nerved above the base and loosely venose below, the 
veins scarcely prominulous; panicles terminating branches, ronndedobovoid, 
densely many-headed, 13 cm. long, 10 cm. wide, sordidly griseous-tomentulose- 
puberulous and more sparsely pilosulous with straight hairs; pedicels 1 mm, 
long or less; involucre 3.5 to 4 mm. high, the phyllaries very few (about 10), 
about 4-seriate, strongly graduated, the outermost roundish, dull brownish, 
sordid-pilosulous above, the innermost oblong-oval, obtuse, dull brownish with 
thinner paler margins, sparsely pilosulous and subglandular especially toward 
apex; heads in fruit about 8 mm. wide; rays none; disk flowers 5 or 6; corollas 
creamy, 8,5 mm. long, the teeth papillose-barbate at apex, lanceolate, 3 mm. 
long; achenes hlspidulous, 2 mm. long; pappus straw-color, the outer bristles 
squamelliform, 1 mm. long, the others arlstiform, 7 mm. long. 
Type in the IT. S. National Herbarium, no, 989583, collected in shrubby 
ground, Hacienda La Zumbadora, between El Paraiso and La Florida, Depart- 
ment of Cop&n, Honduras, May 13,1919. by S, F. Blake (no. 7386). 
Liabum subglandulare is related to L, cadueifolium and L. deamii Robins. & 
BartL It is distinguished from the former by its obtuse phyllaries and densely 
subglandubir-puberulous stem; from the latter by its dense coating of glandular 
or subglandular hairs and by the lack of floccose pubescence* 
Hieracium hondurense Blake, sp. nov. 
Herbaceous perennial, erect, about 50 cm. high; stems one or two, slender, 
at base loosely spreading-pllose, elsewhere rather densely appressed or ascend- 
ing-puberulous, more densely puberulous on the branches of the panicle and 
there sparsely stipitate-glandular with dark glands on yellowish hairs about 0,2 
mm. long; basal leaves about 3 to 6, obovate or elliptic-oblong, 4,5 to 6 cm. long 
(including the narrowed petiole-like base), 1.5 to 2J5 cm, wide, obtuse, mucronu- 
late, cuneate at base, thin, callous-denticulate, above sparsely long-pilose with 
loose white hairs, beneath spreading-pilose chiefly along the coeta; stem leaves 
2 to 4, the lower oblong or obovate, sessile or subsessile, similar to the basal 
leaves, 4 to 7 cm. long, 8 to 25 mm, wide, the upper one or two linear or elliptic^ 
linear, 2 to 3.2 cm. long, 1.5 to 5 mm. wide; stems bearing flowering branches 
from about the middle, the heads about 15 to 30, loosely panicled, the pedicels 
32 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM* 
1 to 2.8 cm. long* griseoue-puberulous and not densely stipitate-giandular; heads 
yellow, 1 cm. wide, the styles dark; involucre cylindrlc-oblong, 8 to 9 mm, high* 
toward base slightly griseous-puberulous and sparsely stipitate-glandular, the 
bracts colorate at apex; achenes purplish brown, 3*2 mm. long, striate, glabrous, 
rather abruptly contracted into a neck 0.7 mm. long; pappus dirty-white, 5 
mm* long. 
Type in the U. S. National Herbarium, no. 980581, collected on open hillside 
wooded with pine, along trail from La Florida to Hacienda Espfrttu Santo, De- 
partment of Copftn, Honduras, May 14, 1919, by S. F. Blake (no* 7423). 
ADDITIONAL SPECIMEN EXAMINED; 
HONDUBAS:  Open  hillside wooded  with  pine,  Hacienda  Espfritu  Santo, 
May 15,1919, Blake 7434, 
This species is closest to Hieracium comatum Fries, which has a much hairier 
stem, thicker leaves, considerably shorter involucre, and smaller achenes, these 
not conspicuously contracted above into a neck.