Spreading, slender or straggling shrub 0.4–4 m high, often reproducing by suckering. Bark smooth, brown, green or grey to black, often mottled. Branchlets terete, with minute grey or fawn velvety hairs or glabrous; ridges 0.1–0.2 mm high. Young foliage-tips fawn or light brown. Leaves subsessile with basal pinnae arising immediately or rarely to 1 mm above pulvinus; rachis 1–5.5 (–7.5) cm long, with 1 minute, orbicular, hairy or glabrous gland at base of all or most pairs of pinnae except basal pinnae, interjugary glands absent; pinnae 2–11 pairs, decreasing in size towards leaf base, 0.5–4 cm long; pinnules dark green, very slightly paler beneath when fresh, in 4–21 pairs, narrowly oblanceolate or narrowly oblong, 2.5–6 mm long, 0.8–1.8 mm wide, with numerous distinct stomata, often incurved when dry, with midnerve closer to upper margin and 1 or 2 shorter nerves from base, glabrous or puberulous mainly on margins, acute and ±reflexed apically. Inflorescences mainly in axillary racemes, sometimes in terminal false-panicles, with axes ±flexuose, usually greatly exceeding the leaves. Heads 8–15-flowered, dark yellow; buds with spreading flowers. Pods ±straight-sided or slightly constricted between some seeds, 2–8 cm long, 5.5–8 mm wide, ±thin, black or dark brown, sparsely to moderately hairy with minute, erect, fawn, grey or whitish hairs.
Grows in open forest or woodland or in exposed situations on dry stony ridges, on sandstone or Permian sedimentary deposits, in sandy or clayey soil.
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