Shrub mostly 0.5–1.5 m high. Branchlets hairy or glabrous. Axillary spines 1 or 2 per node, sometimes few or absent, mostly 2–20 mm long. Stipules scarious. Leaves bipinnate; pinnae 1 pair, 1–15 mm long; petiole > 0.5–6 mm long; pinnules 2–11 pairs, oblong to obovate or oblanceolate, 1–6 mm long, 0.5–2 mm wide, flat, green to glaucous, glabrous to puberulous; gland within axil of pinnae, stipitate, to 3 mm long. Inflorescences rudimentary 1–3-headed racemes with axes to c. 3 mm long; peduncles 1–15 (–20) mm long, glabrous or hairy; heads globular, 10–40-flowered, infrequently to 60-flowered, golden; bracteoles apiculate to long-acuminate. Flowers 5-merous; sepals 1/2–2/3-united. Pods narrowly oblong, flat or slightly undulate, 1.5–5 cm long, mostly 3–5 mm wide, crustaceous, glabrous or pubescent; margins thick. Seeds longitudinal, mostly oblong, 2.5–4.5 mm long, brown, arillate.
Home