PHILIPPINE PLANTS, IX. 
273 
in whorls of threes, not opposite as in most species of the genus; it differs 
from Polyos7na philippinensis also in its considerably shorter and less 
pubescent flowers, as well as in its usually more prominently dentate leaves. 
LEGUMINOSAE. 
DESMODIUM Desv. 
DESMODIUM TRIFOLIASTRUM Miq. FI. Ind. Bat. F (1855) 248. 
Mindanao, Province of Surigao, Hinatuan, C. V. Piper 549, May 16, 1911. 
This species has not been reported from the Philippines previously, and, 
in fact, is definitely recorded only from Java. The species has been deter- 
mined through the kindness of Sir D. Prain, director of the Royal Gardens, 
Kew, to whom a specimen was sent for comparison with the material in the 
Kew Herbarium. 
DERRIS Lour. 
DERRIS CEBUENSIS sp. nov. § Dipteroderris. 
Frutex scandens, glaber; foliis 13 ad 20 cm longis, foliolis 7, 
nitidis, oblongis vel oblongo-ellipticis, in siccitate pallidis, utrin- 
que concoloribus, 4 ad 8 cm longis, breviter obtuse acuminatis; 
floribus ignotis; leguminibus oblongis vel oblongo-lanceolatis, 
6 ad 10 cm longis, planis, 2.5 ad 3 cm latis; seminibus 2 vel 3. 
A scandent vine, glabrous throughout (flowers unknown), the 
stems brownish-olivaceous, prominently lenticellate, terete, the 
young branchlets smooth. Leaves odd-pinnate, 13 to 20 cm long, 
the common petiole and rachis 7 to 11 cm long. Leaflets 7, 
coriaceous or subcoriaceous, pale, shining and of the same color 
on both surfaces when dry, oblong to oblong-elliptic, 4 to 8 cm 
long, 2.5 to 3.5 cm wide, the base obtuse or rounded, apex 
shortly and obscurely blunt-acuminate, or sometimes obtuse; 
nerves slender, obscure, anastomosing, 7 to 10 on each side of 
the midrib; petiolules 3 to 8 mm long. Flowers unknown. In- 
frutescence axillary, paniculate, up to 25 cm long, entirely 
glabrous, the lower branches up to 8 cm long, the upper ones 
shorter. Persistent calyces shallowly cup-shaped, truncate, 5 
mm in diameter. Pods thin, flat, oblong to oblong-lanceolate, 
pale when dry, 6 to 10 cm long, 2.5 to 3 cm wide, the base 
acute or acuminate, apex shortly and slightly falcately apiculate- 
acuminate, the wings thin, 3 to 7 mm wide, of the same width 
on both sides of the pod. Seeds 2 or 3, rarely only 1, thin, 
flat, 2 mm long. 
Cebu, Bucacao, Bur. Sci. 11014 Ramos, March 19, 1912, on dry hills. 
A species apparently most closely allied to Derris mindorensis Perk., 
and to D. micans Perk., but distinguishable by being entirely glabrous 
throughout. 
