A medium sized much branched shrub up to 2 m. high, branches hairy, very prickly, prickles on internodes also, c. 4-5 mm long, hooked. Leaf stipulate, stipule setaceous c. 3 mm long, hairy; bipinnate, rachis 1.2-5.0 cm long, sometimes prickly. Pinnae 3-6 pairs, c. 7-25 mm long, leaflets 6-10 pairs, more or less sessile, c. 2-3 mm long, c. 1-2 mm broad, ovate oblong, acute, mucronate, hairy on both the sides, glabrous above, pilose below. Flowers in globose heads, solitary or paired in upper axils, peduncle 1.5-3.5 cm long, hairy; heads c. 10-13 mm in diameter, flowers pink, tetramerous, sessile, bracteate, bract linear, spathulate, pilose. Calyx c. 1 mm. Corolla tube c. 3 mm long, lobes c. 1.5 mm long. Stamens 8. Ovary stalked, hairy. Pod 5-7.5 cm long, c. 1.0 cm broad flat, falcate, velvety, sutures wavy, prickly, joints 4-8. Seed ovate, flattened, reddish brown.