Shrub or tree to 15 m high. Bark smooth or fissured, black, brown or green. Branchlets almost terete or slightly angular, with ridges, appressed-puberulous with grey, white or yellow hairs, glabrescent, non-glaucous. Young foliage-tips yellow, velvety-pubescent. Leaves subcoriaceous, dark green; petiole above pulvinus (0.5–) 1–2.3 cm long, with a glabrous or sparsely puberulous gland at base of (or to 5 mm below) lowest pair of pinnae; rachis (1.5–) 3.5–11 cm long, with a depressed-oblong or depressed-spherical gland at the base of each pair of pinnae, sometimes with 1 or rarely 2 smaller interjugary glands between pairs; pinnae (3–) 6–16 pairs, (1.5–) 2.5–6 cm long; pinnules (14–) 20–40 (–62) pairs, cultrate to linear, 2–7 (–9) mm long, 0.5–1 mm wide, glabrous except along margins, broadly rounded or subacute apically. Inflorescences rarely in axillary racemes, mostly in terminal or axillary false-panicles. Heads globular, 20–40-flowered, pale yellow. Pods submoniliform, ±flat, 2.5–11 cm long, 3.5–8 mm wide, coriaceous, black or brown, grey-puberulous, glabrescent.