Subshrub 0.2–0.7 m tall, commonly c. 0.3 m high. Branchlets flexuose, hirsutellous to puberulous, often shortly pilose admixed. Primary leaf axis clearly continuous and decurrent with branchlet, 5–20 mm long, stout, straight to recurved; pinnae 2–4 pairs, 2–12 mm long; petiole absent; pinnules 2–6 pairs, narrowly oblong, 2–7 mm long, 1–1.5 mm wide, recurved to revolute, green to glaucous, hirsutellous to subglabrous. Inflorescences simple, 1 per axil; peduncles 10–20 mm long, hirsutellous to hirsute or shortly pilose; heads globular, large, densely 22–35-flowered, golden. Flowers 5-merous; sepals united in lower ½, 1-nerved; calyx lobes ciliolate, additionally pilose in subsp. drewiana ; petals 1-nerved. Pods narrowly oblong, 3–7 cm long, 6–7 mm wide, crustaceous, shortly villous and often hirsutellous-puberulous admixed. Seeds (subsp. drewiana ) transverse to oblique, oblong to broadly elliptic, 3–3.5 mm long, mottled.
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