Acacia exigua I.M.Turner

Shrub or tree 3–6 m tall; crown normally dense. Bark fibrous, grey. Branchlets terete, obscurely (non-resin) ribbed, glabrous. Phyllodes filiform, slightly curved to shallowly serpentinous, terete, 10–18 cm long, c. 1 mm diam., with normally delicately curved to uncinate tip, not rigid, pale subglaucous, glabrous except pulvinus being adaxially puberulous at base, finely striate. Inflorescences simple, 2 per axil; peduncles 8–13 mm long, glabrous; spikes 10–20 mm long, subdensely flowered, light golden. Flowers 5-merous; sepals united into a sinuate-toothed cup, ¼–⅓ length of petals, villous. Pods linear, constricted between and slightly raised over seeds, shallowly curved, to 9 cm long, 4–5 mm wide, firmly chartaceous, greyish brown, glabrous. Seeds longitudinal, oblong-elliptic to elliptic, 4–5 mm long, slightly shiny, brown; areole minute; aril terminal, whitish.

Grows on low rocky hills in iron-rich soils derived from Marra Mamba and Brockman Iron Formations, with several Acacia spp. and a ground cover of spinifex.