Shrub 0.6–2 m tall, rarely a tree to 4 m tall. Branchlets sericeous between the glabrous resinous ribs. Phyllodes ascending, straight to shallowly incurved, terete to rhombic-terete, 5–13 (–15) cm long, 1–1.5 mm diam., coarsely pungent, rigid, grey-green, glabrous or appressed-hairy in shallow grooves between nerves, with 8 or 16 closely parallel flat-topped or slightly rounded rather broad nerves. Inflorescences simple, 1 or 2 per axil; peduncles 3–8 mm long, glabrous or ±sparsely sericeous and sometimes with red resin-hairs intermixed; heads globular to widely ellipsoid or obloid, 7–9 mm long, 6–8 mm diam., subdensely flowered, bright golden. Flowers 5-merous; sepals ¾-united, ¼–½ length of petals. Pods linear, straight to slightly curved, ±quadrangular in section with wide margins, to 8.5 cm long, 1.5–2 mm wide, thinly coriaceous, minutely sericeous except margins glabrous. Seeds longitudinal, linear, 4–4.5 mm long, shiny, mottled light brown; funicle/aril compressed-conical, ±seed-length.
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