Pitt., Contr. U.S. Natl. Herb. 18:211.1916
Tree, to 13 m tall, ± tomentose throughout, the trichomes sparser on upper leaflet surface, the pubescence reddish-brown except for surfaces of leaflet and corolla. Rachis terete; petiolules 1-2 mm long; leaflets in 4-8 pairs per pinna, ± elliptic, sometimes inequilateral, acute at apex, obtuse to rounded at base, the terminal pair 7-11 cm long and 2-4 cm wide. Spikes solitary or in groups of 2 or 3; peduncles mostly 2-3 cm long; rachis mostly 2-4 cm long; bracts nearly obsolete, less than 1 mm long; flowers sessile; calyx tubular, 4-6 mm long, the lobes acute, ca 1 mm long; corolla 10-15 mm long, the lobes acute, ca 2 mm long; stamens and style ca 2.5 cm long. Legumes subterete, to 35 cm long and 2.5 cm diam. Croat 7941.
Infrequent or rare, along the shore and in the forest. Flowers in the dry season, with the fruits maturing in several months.
Guatemala to Panama. In Panama, known from tropical moist forest in the Canal Zone and Coclé and from premontane wet forest in Panama.