Shrub to 4 m high. Branchlets rarely pruinose, glabrous. Phyllodes oblanceolate to narrowly elliptic or narrowly oblong-elliptic with the adaxial margin often ± straight, 1–4.5 cm long, usually 2–9 (–11) mm wide, l: w ratio = 3–6, acute to obtuse, with normally ± central mucro, thin to coriaceous, green to glaucous, glabrous or sparsely ciliolate near base; midrib not prominent; lateral veins obscure or absent; gland sometimes absent, rarely 2, with lowermost 3–10 mm above pulvinus. Inflorescences racemose; raceme axes usually 1–4.5 cm long and glabrous; peduncles 2–5 mm long, usually glabrous; heads globular, 7–29-flowered, golden. Flowers 5-merous; sepals united. Pods narrowly oblong, straight or curved, to 7 cm long, 5–8 mm wide, firmly chartaceous, sometimes pruinose, glabrous. Seeds (subsp. buxifolia) longitudinal, oblong to ovate, 4–4.5 mm long, slightly shiny, black; aril ± clavate.
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