Erect shrub 0.4–0.6 (–1) m tall, readily suckering. Branchlets glabrous. Phyllodes crowded, markedly inequilateral, generally obdeltate with adaxial margin conspicuously rounded and its proximal edge ±parallel to branchlet, 3–8 mm long, 4–8 mm wide, mucronulate, grey-green, glabrous; imperfectly 2-nerved, lateral nerves not anastomosing; gland prominent, (1.6–) 2.3–3.7 (–4.5) mm above pulvinus, similar in form to A. kettlewelliae. Inflorescences (6–) 8–10-headed racemes; raceme axes (0.5–) 1.2–2.7 (–6) cm long (exceeding the phyllodes); peduncles 2–4 mm long, glabrous; heads globular, 3–4 mm diam. (dry), 7–9-flowered, golden. Flowers 5-merous; sepals united. Pods and seeds not seen.