A spherical tree, 5-10 m tall, with slender downward curving branches. Stipules falcate-reniform. Leaf 13-35 cm long, leaflets 8-20 pairs, oblong, ovate-elliptical, unequal sided, 1.5-4.5 cm long, 1-2 cm wide. Inflorescence pedunculate axillary raceme, peduncle 1-2 cm long, axis 5-9 cm long. Pedicel 1.5-2.5 cm long. Calyx hairy, sepals ovate, 4-7 mm long. Petals 10-15 mm long, oblong-obovate, hairy externally. Stamens 10, 4 long, 3 medium sized and 3 small, not swollen in the middle. Pod 20-30 cm long, c. 2 cm broad, cylindrical, glabrous.