Inga quaternata Poepp.

Inga roussoviana Pittier, Contr. U. S. Nat. Herb. 18: 175. 1916.
A small tree, 3-S m. high, the twigs soon glabrate. Rachis of leaf wingless, bearing small glands (often wanting) between the leaflets; leaflets 3 or 4 pairs, obovate to oblong, glabrous or glabrate, cuneate at base, acute, the basal pair 3.5-6.5 cm. long, the terminal pair 9-18 cm. long; inflorescence more or less paniculate; peduncles brown-tomentose, 1-1.5 cm. long; pedicels 4-7 mm. long, tomentose; calyx 5 mm. long, pubescent; corolla 9-11 mm. long, pubescent; stamen-tube about as long as the corolla ; legume flat, 1 1-17 cm. long; seeds 15-21.
Typb locality: San Felix, Panama. Distribution: Panama to Guatemala.

Inga williamsii Pittier, Contr. U. S. Nat. Herb 18: 176. 1916.
A small tree, about 7 m. high, the twigs brownish-tomentose. Rachis wingless, tomentose, bearing small sessile glands between the leaflets; leaflets 3 to 4 pairs, lanceolate to ovate, 2-8.5 cm. long, broadly cuneate at base, acute, more or less tomentose when young, becoming glabrate in age except on the veins; peduncles axillary, solitary or paired, I cm. long; flowers in small heads; pedicels 1-1.5 mm. long; calyx 3.5-4 mm. long, tomentose; corolla 5-6 mm. long, densely villous; stamen-tube not longer than the corolla; young legume densely tomentose.
Type locvlity: Bismarck, Panama. DisTRrBUTiON : Known only from the type locality.