Tree to 15 m high. Bark rough. Branchlets glabrous or subglabrous (hairy on juvenile plants). Phyllodes (excluding juvenile plants) falcately recurved, narrowed at both ends, 8–16 cm long, 5–10 mm wide, thinly coriaceous, grey-green, glabrous or sparsely appressed-puberulous, with numerous fine close non-anastomosing veins, of which 1–3 more prominent. Inflorescences 2-headed racemes; raceme axes 0.5–4 mm long, normally terminated by a dormant vegetative bud, sometimes growing out at anthesis; peduncles 5–10 mm long, glabrous or sparsely appressed-puberulous; spikes 2–4.5 cm long, bright lemon-yellow. Flowers 5-merous; sepals united into a sinuate-toothed, glabrous calyx; ovary densely hairy. Pods shallowly constricted between and slightly convex over seeds, to 9 cm long and 3 mm wide, thinly coriaceous, brown with yellow margins, glabrous. Seeds longitudinal, oblong, 4–5 mm long, shiny, dark brown to blackish; funicle/aril folded below seed.
Often forms dense stands, sometimes with Acacia shirleyi, in shallow stony soil, often over weathered sandstone, in the 625–750 mm annual rainfall belt. Also occurs in eucalypt woodland and open forest.
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