Shrub to c. 5 m tall, dense, spreading. Branchlets glabrous, complanate; young growth reddish brown and scurfy. Phyllodes dimidiate, 8–10.5 (–12.5) cm long, (15–) 20–32 mm wide, obtuse with a small callus mucro, glabrous; nerves many, fine, longitudinal, non-anastomosing, 2 or 3 more prominent than the rest; gland basal; pulvinus 3–7 mm long. Spikes 2.5–3.5 cm long, almost white; peduncle 6–8 mm long, subtended by small ovate bract. Flowers 5-merous; calyx broadly cupular, c. 0.4 mm long, sinuolately lobed, hirsute at base; corolla c. 1.8 mm long, deeply lobed, glabrous; stamens c. 3 mm long; ovary glabrous. Pods erect, linear, tapered towards base, to 12 cm long, 4–6 mm wide, quadrangular due to prominent marginal ‘wing’, the ‘wing’ 4–6 mm wide on each valve and with a deep longitudinal groove on surface of valve between them, woody, straight but curved upon dehiscence, sparingly striate, glabrous, reddish brown, opening elastically from apex. Seeds longitudinal to slightly oblique, seated in well-marked depressions within pods and remaining attached by a straight funicle following dehiscence; aril cupular.
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