Shrub or tree to 6 m high, twisted. Stipules caducous, deltate, c. 1 mm long, with erose margins. Phyllodes oblanceolate, obovate or elliptic, commonly asymmetrical, 4–14 cm long, 1.5–6 cm wide; margins uneven and mostly resinous; apex obtuse; main veins mostly 3; secondary veins prominent, strongly anastomosing; gland small or obscure, 3–9 mm above phyllode axil; pulvinus present. Spikes solitary or twinned, to 6 cm long; bracteoles cucullate-conchoid, c. 1 mm long, c. 1 mm wide. Flowers scattered, 4-merous; sepals united. Pods subcylindrical, gently curved, moderately thick-walled, 2.5–11.5 cm long, 8–12 mm wide. Seeds elliptic, 5–7.5 mm long; funicle usually folded 3 times; aril turbinate.