Small, glabrous, erect, rigid, spreading intricate shrubs to 1 m high; branches spinescent, grey-green,  terete but striate with thin light coloured ridges. <P>Phyllodes absent or if present (very rarely) then articulate, thick, linear, 1-5 cm long and to 2 mm broad, 1-veined, with a curved or hooked point.<P>Inflorescences simple; flower-heads small, globular, bright yellow, 3-8-flowered, sessile or sometimes on peduncles to 6 mm long; flowers 5-merous; bracts and bracteoles brown, not as conspicuous as in <I>A. continua</I>. <P>Legumes shortly stipitate, linear-moniliform, curved, 2-3 cm long and to 3 mm broad; margins thick, light brown. Seeds longitudinal in legume, obloid-ellipsoid; funicle short, not folded, expanded into a fleshy clavate aril.