Shrub or small tree 0.5–6 m high, often suckering. Bark grey-brown, fissured with age. Branchlets terete, pale green to yellowish green, glabrous, with low rounded longitudinal ridges. Phyllodes sessile, subrigid to rigid, ±straight, patent to ±inclined, ±terete to quadrangular, with 4 to c. 8 main longitudinal veins, 1.5–5 cm long, 0.7–1.5 mm wide, tapered to a pungent cusp 0.7–3.5 mm long, abruptly broadened and longitudinally splayed at base for 1–6 mm (leaving an ovate to obovate scar on branchlet when shed), glabrous except immature phyllodes sparsely appressed hairy; gland small, near (or to 3 mm above) base, often a second minute gland in middle third of phyllode and rarely a third similar gland towards apex; galls with a Hakea fruit-like shape commonly form within some phyllodes. Inflorescences rudimentary 1-or 2-branched racemes, often appearing simple; raceme axes to 1 mm long; peduncles 5–32 mm long, glabrous; heads globular, 17–41-flowered, 5–11 mm diam., cream to pale yellow. Flowers 5-merous; calyx gamosepalous, cupular. Pods and seeds not seen.
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