Shrub usually 0.4–1 m tall. Branchlets ribbed, glabrous. Stipules caducous. Phyllodes often subdistant, ascending to erect, usually shallowly incurved, acutely pentagonous in section by 5 prominently raised nerves (sulcate in between), if flat (mainly juvenile plants) the 2 adaxial nerves forming a broad upper margin, 2–4.5 cm long, usually 1–1.5 mm wide, ±epulvinate, glabrous; mucro often coarsely pungent; gland 3–7 mm above base. Inflorescences 1–3-headed racemes; raceme axes 1-5 mm long, glabrous; peduncles 4–8 mm long, glabrous; heads globular, 4.5–5 mm diam., 12–21-flowered, cream to pale yellow. Flowers 5-merous; sepals free. Pods linear, rounded over seeds, shallowly constricted or not between seeds, to 8 cm long, 3–4 mm wide, thinly coriaceous, dark red-brown, glabrous. Seeds longitudinal, oblong to elliptic, 3–4 mm long, shiny, black; aril thick.
Grows in sand, lateritic gravel over white sand, quartzite granite-clay, in heath, mallee scrub and eucalypt woodland, on flat plains.
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