Rounded or obconic, multi-stemmed shrub 2.5–5 m tall and 3–6 m wide, maturing to tree to 6 (–8) m; crowns dense to sub-dense. Branchlet ribs covered by a ±thick layer of opaque, yellowish resin that becomes segmented and often persists as beaded white lines on mature branchlets; new shoots resinous, developing phyllodes striate with white appressed hairs between resinous longitudinal nerves. Phyllodes ascending to erect, mostly shallowly or moderately incurved, narrowly linear, not rigid, terete to flat, (3–) 4–8 (–9) cm long, (0.8–) 1–2.5 (–3) mm wide; apices normally uncinate to sub-uncinate or curved, normally grey-green to greyish or sub-glaucous, indistinctly multistriate; gland obscure, basal. Inflorescences simple; peduncles 3–6 mm long; spikes (1–) 1.5–2 cm long. Flowers 5-merous; sepals free, c. ½ length of petals, oblong; petals 1–1.3 mm long. Pods oblong to narrowly oblong or fusiform, 1–4 cm long, (4–) 5–8 (–10) mm wide including wings, chartaceous, flat, glabrous, brown but often tinged greyish, often scurfy, ±longitudinally reticulate; marginal wing 0.5–1 mm wide, indistinct. Seeds oblique, 3.5–4 mm long, 2–2.5 mm wide, oblong to slightly elliptic; aril small and white.
In Western Australia Acacia incurvaneura grows in a range of habitats but commonly in red-brown sandy loam on plains or in gently undulating country, often over hardpan at a relatively shallow depth, and in skeletal soil on breakaways or low rocky hills. It is found in mixed Acacia shrubland or woodland communities, often in association with A. caesaneura.
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