Shrub to 3 m high or tree to 6 (–8) m, sometimes with pseudo-conifer or rarely conifer growth form, trunks and main branches sub-straight to crooked. Branchlets often dark grey, hoary between the commonly red-brown, resinous or non-resinous ribs at extremities, soon glabrous, the resin translucent and normally forming a ±thin veneer; new shoots resinous, normally with a dense layer of dark-coloured glandular hairlets. Phyllodes mostly variously curved to sinuous or sigmoid, terete to subterete, rarely a few flat, 40–80 (–100) mm long, often shorter and in clusters of 2–5 on juvenile plants, 0.8–1.2 (–1.5) mm wide, normally green to greyish green, finely striate by longitudinal nerves with silvery appressed hairs between them (most obvious on young phyllodes); gland mostly 2–10 mm above the pulvinus, phyllode often swollen and/or kinked at the gland. Inflorescences simple; peduncles 7–15 mm long, with appressed white hairs and normally red-brown glandular hairlets; spikes 10–30 mm long. Flowers 5-merous; sepals ±free, linear to narrowly oblong and expanded at apex. Pods mostly oblong to narrowly oblong, flat, (10–) 15–40 mm long, usually 8–15 mm wide including wings, thinly coriaceous, openly reticulate, brown to greyish brown or reddish brown, glabrous or with minute, appressed hairs; marginal wing 1–3 (–3.5) mm wide, commonly undulate. Seeds normally oblique, 4–6 mm long, 2–3.5 mm wide; aril white or pale yellow.
Grows in a variety of habitats but commonly found on stony plains in red-brown sand, sandy loam, clay or sandy clay loam, often over hardpan; in open mixed Mulga shrubland or low woodland communities.
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