Usually a shrub 1–3 m high. Branchlets angled at extremities, with indumentum of ±sparse minute (less than 0.1 mm long) appressed straight hairs. Phyllodes narrowly elliptic to narrowly oblong-elliptic, usually 5–10 cm long, 5–15 (–20) mm wide, thin, with indumentum as on branchlets but denser on young tips, occasionally some glabrous, 1-veined; lateral veins obscure; gland not exserted, normally 5–23 mm above pulvinus, often connected to midrib by a fine oblique nerve, with margin normally slightly recessed at gland. Inflorescences racemose; raceme axes usually 1.5–3.5 cm long, with indumentum as on branchlets but often denser; peduncles 2–5 mm long, with indumentum as on raceme axes; heads globular, 8–16 (–20)-flowered, golden; bracteoles similar to A. caesiella. Flowers 5-merous; sepals c. ⅘‑united; ovary densely pubescent. Pods stipitate, to 8 cm long, (7–) 10–12 mm wide, firmly chartaceous, dark brown, glabrous or with sparse minute appressed hairs, often ±pruinose, dehiscing unilaterally. Seeds longitudinal, oblong-elliptic, 4–6 mm long, slightly shiny, black; aril clavate.
Grows in soil derived from granite or basalt, near creeks or on margins of swamps, in Eucalyptus forest or woodland, usually at altitudes above 1000 m.
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