Shrub or small tree; twigs sharply angled, glabrous or sparsely hairy. Lvs reduced to phyllodes, alternate; phyllodes glabrous, narrowly elliptic to obovate, symmetric or slightly curved, acute or obtuse and usually shortly mucronate, entire, (60)-80-130 × 6-22 mm, with 2-(4) prominent veins; stipules lanceolate, 1-3 mm long, not always conspicuous in mature plants. Fls 4-merous and solitary but closely packed in axillary, pale to golden yellow, cylindric spikes; spikes < or = lvs. Pod glabrous or sparsely hairy, straight or slightly curved, 80-120 × c. 4 mm; aril not much folded, thickened and cup-shaped below seed.