A large climbing or scrambling shrub, armed with numerous hooked prickles; young branches and petioles pubescent, large plate shaped gland at the base of petiole and same between each of the 2-4 upper pairs of pinnae; leaves up to 15 cm long, pinnae 8-15 pairs, leaflets 40-50 pairs, leaflets linear-oblong, obtuse, unequal sided, glabrous, slightly overlapping; head 1-2 cm, globose, in terminal panicles, peduncles downy; flowers subsessile, white or pale yellow; bracts minute, lanceolate; calyx sub-campanulate, short, glabrous; corolla slightly exceeding the calyx; stamens many, free, much exserted, anthers minute; ovary shortly stipitate, many ovuled, style slender, stigma minute; pods 15-20 X 2-3 cm, dehiscent, glabrous, thin, straight, strap-shaped, sutures rather raised, reddish-brown.