Spreading rigid shrub 0.5–1.5 m high. Branchlets ±ribless, reddish at extremities, ageing light grey, glabrous. Stipules persistent, spinose, 1.5–3 mm long, normally shallowly recurved. Phyllodes ascending to erect, commonly shallowly curved, frequently slightly kinked at the gland, pentagonal-quadrangular in section when dry, 20–40 mm long, c. 1.5 mm wide, pungent, rigid, glaucous, glabrous, 5-veined but the adaxial 2 frequently coalescing in lower ⅓ of phyllode; gland c. 1 mm above base, 1–1.5 mm long; pulvinus much-reduced, basally dilated. Inflorescences rudimentary, normally 2-headed racemes with axes greater than 0.5 mm long; peduncles 3.5–7 mm long, crimson, glabrous; heads globular, 16–22-flowered, golden. Flowers 5-merous; sepals c. ½-united. Pods narrowly oblong, flat, to 7 cm long, c. 1 cm wide, thinly crustaceous, blackish, glabrous. Seeds longitudinal, elliptic, c. 12 mm long, compressed; aril small, pileiform.
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