Multi-stemmed subshrub normally 0.3–0.7 m high. Stems slender, glabrous or sometimes sparsely hairy. Stipules 0.5–1 mm long. Bipinnate leaves absent or rarely a few at base of stems; pinnae 1 pair, 5–12 (–15) mm long; pinnules 2–3 (–4) pairs, normally ± lanceolate, 5–12 (–20) mm long, 2–4 (–7) mm wide, flat, subglaucous, glabrous or with sparse, minute, appressed hairs on margins. Phyllodes often resembling the stems, mostly linear, flat except sometimes ± quadrangular when very narrow, 50–150 (–180) mm long except shorter (mostly 15–40 mm) where inflorescences occur, normally 0.8–2 mm wide, ascending to erect, glabrous; midrib prominent; gland absent. Inflorescences simple, initiated on new shoots within axils of juvenile phyllodes, sometimes a few short axillary racemes or forming false terminal racemes; peduncles 4–10 (–12) mm long, sparsely to densely hirtellous; heads globular, 11–19-flowered, golden. Flowers 5-merous; sepals united; petals 1-nerved. Pods linear to narrowly oblong, 30–60 mm long, 4–4.5 mm wide, crustaceous, ± straight, greyish brown, often faintly pruinose, glabrous, margins thick and yellow. Seeds mostly longitudinal and obloid, obliquely truncate on edge adjacent to aril, 3–4 mm long, shiny, black, arillate.
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