Shrub up to 3.5 m high; young branchlets reddish-brown or brown, angular-striate, usually hirsute-pubescent, seldom glabrous. Stipules spinescent, in pairs, slender, divaricate, up to 1 cm long. Leaves phyllodic, apparently simple, 0.5-1(1.5) x 0.2-0.6 cm, obliquely-ovate to oblong or narrowly lanceolate, undulate, with a single nearly centric midrib, apex obtuse or distinctly mucronate, glabrous throughout or sometimes with hairs on the margins and on the midrib. Inflorescences capitate, on axillary peduncles which are about as long as the phyllodes. Flowers bright yellow. Calyx lobed but not separating into sepals, ± half as long as the corolla. Petals narrow, glabrous. Pods straight or ± falcate, 2.5-6 x 0.2-0.6 cm, dehiscent, villous, rarely glabrous or hispid. Seeds dark brownish-black, ±7 x 2.5 mm, smooth; caruncle conspicuous.