Shrub to 4 m tall, multistemmed, spreading, resinous. Bark 'Minni Ritchi' type. Branchlets angular, purplish brown or red-brown, with minutely crenulated, weakly appressed-villous ridges; interstices glabrous, lenticellate. Phyllodes erect, linear, flat, 1.5–5.5 (–7) cm long, 0.7–2 mm wide, with weakly villous margins, pungent-pointed, thinly coriaceous, with 2 prominent raised longitudinal villous nerves, often with 1 subprominent parallel nerve; gland 1, inconspicuous, basal, 2.3–9.5 mm above pulvinus. Spikes 13–28 mm long, golden. Flowers 5-merous; calyx 0.4–1 mm long, dissected to ⅖–¾ of length, with margins and midribs ±ciliolate; corolla 1.1–1.6 mm long, dissected to less than half, glabrous; ovary scurfy-scaly to villous. Pods linear, ±flat, ±constricted between seeds, curved, 2.5–14 cm long, coriaceous, reticulate; margins pale. Seeds oblique, narrowly oblong-elliptic, 3.6–4.5 mm long, dark brown to black; pleurogram with pitted halo; areole circular to obovate, closed, depressed, dark grey-brown to dark brown.
Grows on stony, often lateritic plains with shallow, sandy soils, on escarpments or in undulating country, in grasslands or eucalypt–spinifex woodland.
Details of ecology, utilisation, etc. of A. chisholmii are given in L.J. Thomson & N. Hall, Australian Acacias no. 25, CSIRO Division of Forestry & Forest Products (1989).
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