A large shrub or small, unarmed evergreen tree, bark greyish brown, slightly fissured, young shoots covered by tomentum. Leaves bipinnate, stiuplate, stipule setaceous; rachis 7-15 cm long, pubescent, ending in a soft bristle, common rachis 15-20 cm long, pinnae 4-9 pairs, 5-10 cm long, hairy, ending into a bristle, leaflets 10-17 pairs, sessile, c.10-13 mm long, c.2-4 mm broad, oblique, linear, oblong, acute, glabrous or subglabrous, base oblique. Flowers in globose white heads, often in pairs, peduncle 2.5-3.8 cm long, head 1.5-2.2 cm in diameter. Calyx 2-3.5 mm long, tubular-campanulate, teeth short, villous. Corolla 10-11 mm long, petals free, valvate, spathulate, pilose outside. Stamens 10, much exserted, anthers eglandular. Ovary stalked, pubescent, style filiform, stigma minute. Pod straight, flat, 12.5-20 cm long, c.1.5-2.0 cm broad, minutely pilose, acute at the apex. Stipe 1-2.5 cm long Seeds 15-25, 5.6 mm long, c.4.5 mm broad, oval, glaucous, dark brown, with a prominent U-shaped mark on either side.