464 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
flower spikes subglobose; bractlets lanceolate, acute, hairy, very small and 
deciduous; flowers small, sessile; calyx 2.5 mm. long, sparsely appressed- 
pubescent ; corolla 8 mm. long, tubular but broader at the apex, minutely and 
sparsely appressed-pubescent, the lobes about 1 mm, long, narrow and obtuse; 
Stamen tube included; pistil up to 20 mm. long, the ovary glabrous, long- 
stipitate (the stipe 3 mm. long). 
Type in the Gray Herbarium, collected at Santa Marta, Colombia, altitude 
about 30 meters, in September, 1898 to 1901, by H. H. Smith (no. 309a). 
This species differs from P. oblongum in the smaller and differently shaped 
leaflets, in the pedicellate glands, and in the larger flowers with a glabrous 
ovary. 
FIVE UNDESCRIBED SPECIES OF PITHECOLLOBIUM OF THE SEC- 
TIONS SAMANEA AND CAULANTHON. 
Pithecollobium discolor Pittier, sp. nov. 
Section Samanea, series Parviflorae. A large tree with rounded crown, the 
branchlets more or less pubescent. 
Leaves terminal, caducous, the rachis more or less grayish-pubescent, some- 
times quite glabrous; petioles about 3.5 cm. long, canaliculate, with a large 
ovate gland about 1 cm. above the base; pinnae 1 or 2-jugate; leaflets 2 to 4- 
jugate, with interfoliolar depressed discoid glands between the upper or two 
upper terminal pairs; petiolules 1 mm, long or less, pubescent; blades coria- 
ceous, ovate-lanceolate to lanceolate, acute at the base, obtuse at the apex, 
sparsely hairy or glabrous above, paler and more or less minutely pilosulous 
beneath, 1 to 5 cm. long, 0.6 to 2 cm. broad, the margin thick and slightly 
revolute. 
Inflorescences axillary, paniculate at the ends of the branchlets, the main 
peduncles bearing at the apex several pediceled flower heads; peduncles and 
pedicels grayish-pubescent, the former 4 to 12 cm. long, the latter slender, 2 
em. long; flowers small, white, pediceled ; pedicels 0.9 to 1 mm. long, pubescent; 
calyx campanulate, 1.5 to 2 mm. long, pubescent, the teeth broad, subacute; 
corolla 8 to 3.5 mm. long, glabrous, the lobes ovate-lanceolate, about 1 mm. 
long; stamen tube included; pistil about 11 mm. long, the ovary 2 mm. long, 
glabrous, substipitate. 
Legume flat and thin, straight, acute at base and apex, substipitate, glabrous, 
10 to 12-seeded, 10 to 17 cm. long, 1.5 to 1.8 cm. broad, the peduncle about 
2.5 cm. long. 
Type in the U. 8S. National Herbarium, no. 471907, collected at La Verbena, 
near San José, Costa Rica, altitude about 1,000 meters, December, 1894, by 
A. Tonduz (Inst. Fis. Geogr. Costa Rica, no. 9077). 
ADDITIONAL SPECIMENS EXAMINED: 
Costa Rica: Forested hills, Nicoya, altitude about 300 meters, fruits, 
January, 1900, Tonduz (Inst. Fis. Geogr. Costa Rica, no. 13531). 
PANAMA: Hospital grounds at Ancén, Canal Zone, altitude 20 to 80 meters, 
flowers, February, 1911, Pittier 57387. 
This species was distributed as P. auaremotemo Mart., but it belongs rather 
in series Parviflorae of the section Samanea on account of its small flowers, 
straight flat coriaceous pods, and the characters of the inflorescence. 
Pithecollobium longepedatum Pittier, sp. nov. 
Section Samanea. A large deciduous tree, the branchlets brownish-hairy. 
Leaves large, soft, terminal, the rachis brownish-hairy, the petioles 5 to 11 
cm. long; pinnae 2 to 4-jugate, the small glands inserted a few millimeters 
