A small tree, 3-6 m. tall, young shoots pubescent, old branches glaucous-grey, on older stems the bark peels off in thin flakes of a darker colour. Prickles in threes at the base of the petiole, two lateral ones nearly straight or slightly curved upwards, the third recurved c. 5 mm long. Rachis c. 2.5-5 cm long, with glands between the lowest and upper most pair of pinnae. Pinnae 3-5 pairs, opposite, sometimes alternate, c.1.2-2.5 cm long. Leaflets 8-15 pairs, c. 2-5 mm long, c. 1-1.5 mm broad, linear, obtuse, subsessile. Inflorescence a pedunculate spike, peduncle c. 8-18 mm long, spike 5-10 cm long. Flowers sessile. Calyx c. 1.5-2.5 mm long, broadly campanulate, glabrous. Corolla c. 4 mm long. Stamens indefinite, filaments c. 6-7 mm long. Pod 5-7.5 cm long, c.1.7-2.5 cm broad, thin, flat, almost straight, shortly stipitate, tip with a slightly curved beak. Seeds 5-6, disc like, almost circular, ovate to linear-ovate, 6-9 mm long, c. 5-8 mm broad, with a U shaped depression on either side, smooth, dark brown to greyish green in colour.