Erect shrub or tree to 12 m high. Bark smooth, becoming rough, green, dark grey, dark brown or black. Branchlets strongly ridged; ridges 0.2–0.5 mm high, either with tubercles bearing bristle-like hairs in the juvenile and mature stages or with tubercles only in the juvenile stages and bearing crisped hairs. Young foliage-tips golden, greenish yellow or orange, velvety-tomentulose. Leaves bipinnate, herbaceous, dark green; petiole above pulvinus 0.7–2 cm long; rachis 2–11 (–12.5) cm long, with urceolate or saccate jugary glands at base of some pairs of pinnae; interjugary glands absent; pinnae 5–21 (–26) pairs, 1.5–4.5 (–5) cm long; pinnules 15–72 pairs, very crowded, imbricate, mostly 2–5 mm long, 0.4–0.7 mm wide, ± glabrous on upper surface, ± glabrous or with white or pale yellow crisped hairs below, ciliate. Inflorescences in axillary racemes, or axillary or terminal false-panicles. Heads globular, 15–50-flowered, cream-coloured to pale yellow, rarely deeper yellow. Corolla dissected by ⅕–½. Pods submoniliform, 2–12 cm long, 5–11.5 mm wide, coriaceous, nerved, black, scabrous or non-scabrous, ±appressed-hairy, later glabrescent.
Rainforest margins, open forest, scrub-forest, in valleys or on hillsides, often in sandy or volcanic soils.
Can be grown by seedlings. Seeds needs soaking.
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