Often intricate shrub 0.3–2 m tall. Branches often virgate and arching downwards, reddish to orange-brown. Branchlets sparsely to moderately shortly pilose. Stipules setaceous to narrowly triangular, 2.5–4 mm long. Phyllodes crowded, patent, hastate-acuminate with the abaxial lobe rounded and the gland-bearing adaxial lobe angled, sometimes ±cordiform, 3.5–6 mm long, 2–3 mm wide, pungent, with slender, c. 1 mm long cusp, rigid, green, normally glabrous; midrib central, prominent; lateral nerves absent. Inflorescences simple, 1 per axil; peduncles 2–4 mm long, glabrous; heads globular, 3–5-flowered, cream. Flowers 4-merous; calyx united, cupular. Pods terete, narrowed at both ends, curved, to 5.5 cm long, 1.5–2 mm diam., red-brown, striate, subglabrous. Seeds longitudinal, oblong to slightly elliptic, 2.5–3.5 mm long; aril terminal.
Usually grows in swampy places, often with Melaleuca or Banksia, and also in Karri (Eucalyptus diversicolor) forest.
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