96 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
There are the following other collections: 
PanaMA: Hilly forests around Yaviza, southern Darién, male flowers, April 
23, 1914, Pittier 6584. Forests around Pinogana, southern Darién, 
young shoots and leaves, April, 1914, Pittier 6696. 
Helicostylis montana Pittier, sp. nov. 
A large, deciduous tree, 25 to 30 meters high, the trunk 80 to 100 cm. in diam- 
eter at the base. Bark grayish, smooth. Primary limbs ascending. Crown 
elongate. 
Leaves alternate, coriaceous, glabrous, petiolate; petioles terete, 5 to 10 mm. 
long, minutely pubescent; blades elliptic-lanceolate, suboblique, obtuse at the 
base, long and acutely acuminate at the apex, 8 to 14 cm. long, 2 to 4 cm. broad, 
glabrous and lustrous above, more or less pubescent beneath; nervation pro- 
minulous, the costa impressed above, very prominent beneath; primary veins 
about 15, arcuate, anastomosed along the margin, this entire and more or less 
revolute. Stipules not seen. 
Male receptacles globose, axillary, about 12 mm. in diameter, the peduncles 
slender, 8 to 10 mm. long, pubescent; interstaminal bractlets orbicular-spatulate, 
hairy, ciliate, 10 to 15 mm. long. Perianth divisions 4, free from the base, obo- 
vate, conchoid, more or less attenuate, about 2 mm. long, sparsely hairy and 
ciliate on the upper margin. Stamens 4, exserted, about 3.5 mm. long; filaments 
slender, united at the base; anthers oblong, sagittate at the base, more or less 
apiculate at the tip. Female flowers not seen. 
Fruit unknown. 
Type in the U. S. National Herbarium, no. 715650, collected at Paso de Que- 
brada Gata, in the mountains of the San Felix Valley, Panama, at an altitude 
of 485 meters, male flowers only, December 28, 1911, by H. Pittier (no, 5426). 
Helicostylis bolivarensis Pittier, sp. nov. 
A tree. Branchlets short, slender, grayish, glabrous. 
Leaves coriaceous, stiff, petiolate; petioles canaliculate, 8 mm, long, pubes- 
cent; blades ovate-elliptic, attenuate and rounded at the base, acutely short- 
acuminate at the apex, 3 to 8 cm. long, 2 to 4 cm. broad, above glabrous or 
puberulous, the venation prominulous, beneath paler and puberulous, the vena- 
tion prominent; primary veins 12 to 14, conspicuously arcuate-anastomosed 
along the margins. Stipules acute-lanceolate, about 6 mm. long, pubescent, 
eaducous. 
Male inflorescence not known. Female flowers solitary in the axils of the 
leaves, subsessile, pubescent, the receptacle globose, scaly. Style about 5 mm. 
long, persistent, dividing at the apex into 2 short, thick stigmatic branches. 
Other details not known. 
Fruit globose, 12 to 14 mm. in diameter, 1-seeded. 
Type in the U. S. National Herbarium, no. 537446, collected in the vicinity 
of Estrella, Department of Bolivar, Colombia, female flowers and fruits, May, 
1916, by H. M. Curran (no. 304). 
THE GENERA PIRATINERA AND BROSIMUM. 
Following Poeppig and Endlicher,' most modern botanists have 
considered Piratinera guianensis Aubl.,? not as the type of a well- 
founded genus, but as a member of the genus Brosimum, established 
by Swartz in 1788,* on his Brosimum alicastrum, the breadnut of 
1 Nov. Gen. & Sp. 2: 34. pl. 148. f. a-d. 1838. 
*Pl. Guian. 2: 888. pl. 340. 1775. 
*Prodr. Veg. Ind. Occ. 12. 1788. 
