Subshrub to c. 0.3 m tall, prostrate or spreading-erect. Branchlets glabrous or hairy. Stipules linear triangular, 2–3 mm long, sometimes rigid but not spinose. Phyllodes continuous with branchlets but not forming cauline wings, narrowly linear, ±pentagonal when very narrow, straight to shallowly curved or shallowly sigmoid, 15–60 mm long, 1–2 mm wide, shallowly recurved to markedly uncinate at the sharply or coarsely pungent apex, with indumentum as on branchlets, 5-nerved, with the 2-nerved adaxial margin 0.5–0.6 mm wide; midrib evident. Inflorescences simple, 1 per axil; peduncles 4–12 (–18) mm long, hairy; heads globular to slightly obloid, 15–20-flowered; bracteoles and calyx lobes dark brown and long-acuminate. Flowers 5-merous; sepals ⅓–½-united; petals 2–3 mm long. Pods (immature, subsp. ataxiphylla only) narrowly oblong, curved, to 20 mm long and 4 mm wide, reddish brown, longitudinally striate, strigulose.
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