Unarmed tree up to 12 m high with a conical or rounded crown; young branchlets prominently angled, sometimes with wing-like ridges 1-2 mm high, glabrous or the very young shoots slightly tomentose-pubescent. Leaves bipinnate, green, decurrent: petiole angular, 1,5-3,5 cm long, often eglandular; rhachis 3-10 cm long, with a raised gland just below the junction of each pinna pair; pinnae (5)8-15 pairs; leaflets 15-35 pairs, 6-15 x 0,3-0,75 mm, linear, usually glabrous throughout. Inflorescences capitate, panicled or racemose. Flowers bright golden-yellow; peduncles 2-5 mm long. Calyx sparingly pubescent on apices of lobes. Corolla glabrous or almost so. Pods brown or dark brown, 3,5-10 X 0,4-0,7 cm, not or only slightly moniliform, dehiscing longituÂdinally along one margin only, straight or slightly curved. Seeds brown to blackish-brown, ±5 x 3,5 mm, elliptic, compressed, smooth; caruncle conspicuous; areole ± 3,5 x 2mm.
