It is a deciduous. tree with branchlets drooping, slender, thinly greyish. Flowers are borne in lateral racemes on short side branches. Sepals are green, ovate. Petals are pinkish, ovate, 2.5-3 x 1-1.5cm. Stamens are 10, among them 3 lower ante-sepalous with longer filaments than other 7. Ovary is linear, whitish velvet-hairy. Leaves are compound, 15-30cm; leaflets 5-12 pairs, 2-5 × 1.2-2cm, somewhat leathery, below hairy, above sparsely finely velvet-hairy, base slightly asymmetric, tip pointed or blunt. Pod is blackish brown, cylindrical, 30-45cm long, 1-1.5cm wide, with prominent annular nodes.