Erect shrub or tree to 30 m high; bark smooth, deeply fissured with age, grey, grey-green or brown to almost black; branchlets angled towards apices, with ridges, hairy, pruinose.
Leaves bluish grey to silvery or sometimes green; petiole 0.1–1.5 cm long, hairy, mostly with a gland; rachis 1–12 cm long (rarely to 17 cm long), hairy, ± circular jugary glands present (sometimes missing from basal pair of pinnae), interjugary glands absent; pinnae 6–30 pairs, 0.5–5.5 cm long; pinnules 10–68 pairs, ± narrowly oblong to linear, 0.7–6 mm long, 0.4–1 mm wide, hairy mainly on margins and lower surface.
Inflorescences in terminal or axillary panicles or racemes; peduncles 2–6 mm long, hairy; heads globose, 17–35-flowered, 4–7.5 mm diam., yellow to bright yellow.
Pods straight to slightly curved, ± flat, often slightly constricted between some or all seeds, 2–11.5 cm long, 6–14 mm wide, thinly leathery, glabrous, usually ± pruinose; seeds longitudinal; funicle filiform.
Plant Protection Products