Sprawling or erect shrub, 0.3-0.6 m high. Branchlets sparsely antrorsely puberulous, hairs confined to ribs and commonly appressed. Phyllodes narrowly triangular, sometimes narrowly semi-trullate with a slight gland-angle on adaxial margin near base, pungent, cusp slender and c. 1 mm long, 5-9 mm long, 1-1.5 mm wide, ±patent, rigid, often distant, glabrous, green; midrib prominent and central; lateral nerves absent; stipules narrowly triangular to setaceous, erect, straight. Inflorescences simple, 1 per axil; peduncles 1-5 mm long, puberulous; heads globular to shortly obloid, 8-15-flowered, pale yellow to cream. Flowers 4-merous; sepals 1/2-united, with lobes triangular; petals glabrous, nerveless. Pods curved, terete, to 7 cm long, 2 mm diam., red-brown, striate, glabrous or subglabrous. Seeds longitudinal, ±oblong, 3-4 mm long; aril terminal, conical.
In the Witchcliffe–Augusta area it grows on sand, sandy loam or lateritic loam in shallow depressions in open Jarrah–Marri (Eucalyptus marginata-E. calophylla) forest. Elsewhere it grows on loam in clearly defined, seasonal swampy areas.
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