STANDLEY—TROPICAL AMERICAN PHANEROGAMS, 117 
An additional specimen examined is from Chepo, Province of Panama, altitude 
60 meters (Pititer 4448). 
Related to Pavonia geminiflora Moric., but differing in its pubescent seeds, lack of 
glandular pubescence, narrow, fewer nerved leaves, and smaller flowers. The leaves 
of the type specimen suggest the leaflets of Clematis virginiana and its allies. Another 
plant which resembles M. panamensis in vegetative characters is Malache arachnoidea 
(Presl) Kuntze. That species, however, has spiny carpels. The name arachnoidea 
is given to the species of western Mexico, not because of the character of the pubescence, 
as one might expect, but on account of the resemblance of the fruit and bracts to the 
body and legs of a spider. 
Malache pendulifiora Standley, sp. nov. 
Stems slender, branched, densely pubescent with short stiff tawny stellate hairs; 
petioles stout, 6 to 12 mm. long, densely stellate-hispidulous; leaf blades elliptic to 
elliptic-oblong or even obovate, usually broadest at the middle but sometimes above 
the middle, 8.5 to 15 cm. long, 2.5 to 5.5 cm. wide, long-acuminate, sometimes abruptly 
so, more or less oblique at the base and rounded, thin, bright green, stellate-hispid- 
ulous with tawny hairs on both surfaces, rather sparsely so on the upper surface; 
stipules 4 to 5 mm. long, linear, long-attenuate, soon deciduous; flowers solitary, 
axillary, pendulous, on stellate-hispidulous peduncles 2 to 8.5 cm, long; involucral 
bracts 8 to 10, united only at the base, linear, attenuate, about 7 mm. long, densely 
stellate-hispidulous; calyx of the same length as the bracts, the lobes ovate, acute, 
reddish, finely pubescent with stiff stellate hairs; corolla pink, 12 mm. long; carpels 5, 
about 9 mm. high, reddish, glabrous, coarsely reticulate-veined on the back, each 
bearing 3 retrorsely barbed spines about 5 mm. long. 
Type in the U. S. National Herbarium, no. 677582, collected in the humid forest 
around Los Siguas Camp, southern slope of Cerro de la Horqueta, Chiriqui, Panama, 
at an altitude of about 1,700 meters, March 17 to 19, 1911, by H. Pittier (no. 3188). 
In the form of the flowers and in the small stipules this resembles Malache leucantha, 
a South American species, but that has a broad, much branched inflorescence and the 
involucral bracts are united for nearly half their length. 
A NEW WALTHERIA FROM COLOMBIA. 
The plant described below was distributed as Waltheria involucrata 
Benth., “narrow bracted form.’’ It is not closely related, however, 
to that species, in which the bracts are united, thin, and accrescent. 
Apparently it is allied to the Panamanian Waltheria glomerata Presl, 
which is distinguished by its obovate-oblong leaves, rounded at the 
base, its closely sessile flower clusters, and its narrower acute bracts. 
Waltheria subcordata Standley, sp. nov. 
Young branches densely and finely stellate-pubescent, slender, straight, the inter- 
nodes 3 to 8 em. long; stipules linear-subulate, 4 to 7 mm. long; petioles stout, 1 to 2 
em. long, densely and finely stellate-pubescent with brown hairs; leaf blades narrowly 
oblong-ovate to broadly ovate or rounded-ovate, 6.5 to 13 cm. long, 2.5 to 9.5 cm. wide, 
acute at the apex, subcordate or even cordate at the base, often inequilateral, finely 
or coarsely crenate, densely and finely stellate-pubescent on the upper surface when 
young, becoming glabrate in age, somewhat paler beneath and velvety-pubescent 
with short stellate hairs; flowers in dense clusters 1 to 2 cm. broad, these peduncled 
in the axils of the leaves, or the upper racemose; peduncles 5 to 12 mm. long, or some 
of the clusters sometimes subsessile; flowers usually 2 together, subtended by several 
bracts, these distinct, 6 mm. long, usually obovate-spatulate but sometimes narrowly 
oblanceolate, obtuse, finely and very densely stellate-pubescent; flowers very shortly 
