Spreading shrub 1–2 m high. Branchlets hirsutellous, sometimes glabrous. Stipules 1–2 mm long. Phyllodes subsessile, often subverticillate, normally patent, narrowly triangular to linear-triangular, sometimes narrowly linear, ± quadrangular to flat, 8–20 mm long, 1–2 mm wide, pungent with a 1–2 mm long cusp, rigid, green, glabrous; midrib prominent; gland normally on a slight angle 0.5–2 mm above base. Inflorescences 1-headed rudimentary racemes with axes to 0.5 mm long; peduncles 1–3 mm long, glabrous or subglabrous, recurved in fruit; basal bracts 3 and fused; heads globular, 3.5–5 mm diam. (dry), 15–30-flowered, bright yellow; bracteoles acuminate, often slightly exserted beyond flowers in buds. Flowers 5-merous; sepals free or united; petals obscurely 1-veined. Pods narrowly oblong, shallowly to strongly curved, to 4 cm long, 2.5–4 mm wide, ± firmly chartaceous, black, glabrous. Seeds longitudinal, oblong, c. 3.5 mm long, mottled, exarillate; funicle filiform.
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