472 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
5. Machaerium glabripes Pittier, sp. nov. 
A small armed tree, about 6 meters high, with a trunk 10 em. in diameter 
at the base; young branchlets subangular, minutely pubescent, sparsely 
lenticellate. 
Leaves 25 to 45-foliolate, the rachis slender, canaliculate, 4 to 7 cm. long, 
hairy on the dorsal side only; leaflets coriaceous, glabrous, the petiolules 
distinct but less than 0.5 mm. long, the blades oblong, rounded or subcuneate 
at the base, rounded or truncate and submucronate at the apex, 3 to to 10 mm. 
long, 1.5 to 3 mm. broad, dark green above, paler beneath, the veins numerous, 
parallel, not anastomosing, running into the marginal nerve; stipules of the 
older branchlets indurate-spinescent, slender, acute, about 5 mm. long, those 
on the new branchlets ovate-acuminate, scarious, glabrous. 
Flowers not known. 
Legume 4.5 to 5 cm. long, glabrous, long-stipitate (stipe pubescent, about 
8 mm. long), the pedicel ferruginous-pubescent, 8 to 4 mm. long, the seminal 
part dark brown, torulose and striate or verruculose, sharply bent, the wing 
membranous, cultriform, more or less obtuse, apiculate, 1.3 to 1.5 em. broad. 
Type in the U. 8. National Herbarium, no. 678107, collected in fruit only in 
the vicinity of Penonomé, Province of Coclé, Panama, March, 1908, by R. 8. 
Williams (no, 410). 
The specimens agree with the description of the leaves and general char- — 
acters of Jf. glabratum, except as to the size of the leaves, but without having 
seen the flowers of the Panama tree it is impossible to determine exactly its 
relationship to the Colombian plant. 
6. Machaerium cirrhiferum Pittier, sp. nov. 
A trailing armed shrub, the stems 2.5 to 5 em. in diameter; branchlets often. 
spirally twisted, at first densely ferruginous-pubescent. 
Leaves 41 to 65-foliolate, the rachis slender, 7 to 16 cm. long, canaliculate, 
ferruginous-tomentellose ; leaflets subcoriaceous, glabrous, the petiolules 0.5 mm. 
long or less, the blades oblong, rounded at the base, rounded and slightly 
emarginate at the apex, 4 to 15 mm. long, 3 to 6 mm. broad, pale beneath, the 
veins sinuous, numerous, more or less anastomosing, running into the marginal 
nerve; stipules indurate-spinescent, short, stout, arcuate, at first ferruginous- 
hairy. 
Inflorescences terminal, up to 40 cm. long, broad, the rachis densely fer- 
ruginous-pubescent; bracts stipule-like; peduncles few-flowered ; pedicels stout, 
3 mm. long, densely ferruginous-hairy; bractlets large, suborbicular, striate, 
ferruginous-pubescent; calyx campanulate, about 5 mm. long, ferruginous- 
tomentellose; standard grayish-pubescent without. 
Legume 4 to 5.5 em. long, not stipitate, the seminal part 1.5 cm, long and 
about 1 cm. broad, densely golden-setose, the wing cultriform, rounded at the 
apex, 1.5 to 1.8 cm. broad, sparsely tomentose. 
Type in the U. S. National Herbarium, no, 678111, collected in the vicinity 
of Penonomé, Province of Coclé, Panama, in fruit, March, 1908, by R. S. 
Williams (no. 416). 
This species is well characterized by its tendril-like branchlets and by having 
the fruit almost sessile and covered with a golden-yellow indument, 
7. Machaerium arborescens Pittier, sp. nov. 
A tree about 12 meters high, the trunk 10 cm, in diameter; branchlets stout, 
grayish, more or less lenticellate, at first densely grayish-tomentose. 
Leaves 31 to 61-foliolate, more or less fasciculate at the ends of the short 
branchlets, the rachis slender, 2.5 to 8.5 em. long, densely ferruginous-pubescent ; 
leaflets membranous, inequilateral, the petiolules hairy, not over 0.5 mm. long, 
