Subshrub 0.15–0.6 m tall, commonly multistemmed. Branchlets rather rigid; indumentum variable. Stipules spiny or scarious, 2–8 mm long. Pinnae 1 pair, 5–15 mm long; apices often ±recurved; terminal seta often recurved and/or spiny; petiole 1–2 mm long; pinnules 3–7 pairs, oblong to narrowly oblong, sometimes ovate to lanceolate, 1.5–6 mm long, sometimes 10 mm long (subsp. dasycarpa ), 1–3 mm wide, asymmetrically narrowed at apex, green to glaucous, glabrous to densely hairy; gland at distal end of petiole, sessile. Inflorescences simple, 1 per axil; peduncles 5–20 mm long, puberulous; heads globular, 15–25-flowered, golden. Flowers 5-merous; sepals ¾-united; petals 1-nerved. Pods to 4 cm long, 5–6 mm wide, villous. Seeds transverse to oblique, oblong to elliptic or globose, 2–3 mm long.
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