466 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
to 14 em. long, 2.5 to 5.5 em. broad, the costa and basal veins very conspicuous 
on both sides. 
Inflorescences spicate, sessile; flowers sessile, pink; calyx minutely pubescent 
or glabrescent, 1.7 mm, long; corolla glabrous, or penicillate at the tips of the 
lobes, 6.7 mm. long, the lobes ovate, acute, about 1.2 mm. long; stamen tube 
exserted ; pistil 25 to 30 mm. long, the ovary 1.5 mm. long, brownish-pubescent, 
the style glabrous, filiform. 
Legume flat, thin, slightly arcuate, glabrous, 6 to 12 em. long, 2.2 cm. broad, 
the margin thin and distorted. 
Type in the U. 8S. National Herbarium, no. 676948, collected on banks of the 
Chagres River below Gattin, Canal Zone, Panama, February 17, 1911, by H. 
Pittier (no. 2808). 
Also collected by Fendler (no. 90) at Chagres, near the mouth of the river, 
February 3, 1850. It was listed under P. latifolium Benth., but can not belong 
to that species, aS the inflorescences are spicate. 
In this species the leaf venation is very characteristic. 
Pithecollobium pilosulum Pittier, sp. nov. 
Section Caulanthon. A small tree, about 10 meters high, the trunk 40 em. 
in diameter; branchlets: pilosulous. 
Leaves bipinnate, the petioles 0.6 cm. long, the pinnae 1-jugate, the rachis 
glabrous or pilosulcus, 3.5 to 8 cm. long, with interjuga!l glands between the 
upper pairs of leaflets; leaflets 3 to 6-jugate, subsessile, ovate to oblong, 
markedly inequilateral, subacute or sometimes rounded at the base, obtuse and 
short-apiculate at the apex, dark green above, paler beneath and with promi- 
nent venation, the primary and secondary veins more or less pilosulous; leaflets 
of the basal pair smaller, 2 to 3 cm. long, 1 to 1.5 em. broad, those of the upper 
pair larger, 7.8 cm. long, about 3 cm. broad. 
Inflorescences ramiflorous, capitulate, pedunculate, the peduncles 1 to 1.5 em. 
long; flowers sessile, glabrous, white; calyx 3 to 3.38 mm. long, the teeth broad, 
acute; corolla 5.5 mm, long, the lobes lanceolate, obtuse, about 2 mm. long; 
stamen tube long-exserted. 
Legume arcuate, depressed, glabrous, short-pedunculate (peduncles about 0.5 
cm. long), 5 to 20 em. long, 1.7 to 2 em. broad, 3 to 13-seeded, the margins 
prominent, more or less undulate. 
Type in the U. 8S. National Herbarium, no. 5387245, collected at San Martin de 
Loba and vicinity, Lands of Loba, Department of Bolfvar, Colombia, April or 
May, 1916, by H. M. Curran (no. 88), Also collected at the same place and 
date by Mr. Curran under his no. 19. 
This species differs from all those known in the group Capitati of section 
Caulanthon in the larger number of leaflets, the length of the calyx and corolla, 
and the breadth of the pods. 
CAESALPINIACEAE. 
A NEWLY REDISCOVERED SPECIES OF BROWNEA. 
Brownea leucantha Jacq. Fragm, Bot. Dlustr. 26. pl. 29, 27. 1809. 
A tree, 15 to 20 meters high, branching from the base, or with an elongate 
or pyramidal crown, the branchlets grayish, lenticellate. 
Leaves large, glabrous, the rachis stout, stiff, 25 to 40 cm. long, glabrous, 
more or less lenticellate, with a thicker cylindrical basal pulvinus; leaflets 6 to 8- 
jugate, alternate except the basal and terminal pairs, coriaceous, eglandular, 
the petiolules stout, canaliculate, about 1 cm. long, the blades inequilateral, 
ovate to oblong, 6 to 24 em. long, 3.5 to 6.5 em. broad, emarginate at the base in 
the lower pairs, the inner half acute, the outer half rounded at the base in the 
