Shrub or tree to 10 m high. Bark smooth, grey, green or black mottled with green, shiny. Branchlets ±terete, obscurely ridged, pruinose, glabrous. Young foliage-tips bronze; young leaves pale green with whitish to greyish tint or occasionally pinkish. Leaves herbaceous, green, concolorous to ± discolorous; petiole above pulvinus 1.5–5 cm long, terete, glabrous, with 1 raised ±orbicular gland (⅐–) ¼–½ (–⅔) way below basal pinnae; rachis (1.5–) 4–8 (–10.5) cm long, glabrous, with or without an orbicular gland at base of uppermost and rarely present at other pinnae; interjugary glands absent; pinnae (2–) 3–6 (–7) pairs, 4–13 cm long, with an orbicular gland at base of upper 3–10 pairs of pinnules; pinnules 10–28 pairs, cultrate to narrowly oblong or narrowly lanceolate, slightly curved, 5–23 mm long, 1–5 mm wide, with 1 percurrent vein closer to upper margin but becoming ± central towards apex and 2–4 shorter veins from base not reaching margin and often minor lateral or anastomosing nerves in between, with appressed hairs on margins to completely glabrous, subacute to broadly rounded. Inflorescences mostly in terminal or axillary false-panicles, rarely in racemes. Heads 27–50-flowered, pale yellow. Pods submoniliform, 3–16 cm long, 5.5–13 mm wide, subcoriaceous, dark brown to blackish or blue-black, scaberulous-tuberculate, ± pruinose.
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Leaves 2-pinnate; petiole 2-7.5 cm. long; pinnae mostly 5-14 cm. long, not crowded; leaflets mostly 1-2 cm. long, glabrous.
Tree up to 15 m. high, unarmed; young branchlets glabrous.
Flowers in racemose or paniculate heads.
Grows in deep shady gullies, often near creeks, in moist tall open forest or rainforest, often with Eucalyptus saligna, on sandstone or shale.