Tree 3–10 m high. Branchlets acutely angled or sometimes flattened towards apices, soon terete, glabrous but minutely appressed hairy on young plants. Phyllodes straight to shallowly (occasionally obviously) falcate, often ± dimidiate, (9–) 12–18 cm long, (15–) 20–30 mm wide, thinly coriaceous, glabrous but sparsely appressed-hairy on young plants; with numerous, parallel longitudinal veins rather crowded (normally 3–6 per mm), 2 or 3 veins more prominent than the rest and confluent with each other towards the base, anastomoses few to relatively numerous; pulvinus 3–6 mm long, yellowish to greyish brown when dry; gland basal, prominent. Inflorescences simple; peduncles (3–) 4–5 mm long, glabrous; spikes 35–60 mm long, flowers subdense to subdistant. Flowers 5-merous; calyx gamosepalous, rather broad, usually with a few spreading hyaline hairs towards base. Pods linear, crustaceous, to c. 8 cm long, 3–4 mm wide, straight to curved or sometimes openly coiled, rounded and longitudinally wrinkled over seeds, glabrous, dark brown, somewhat pruinose at least when young, marginal nerves thick and yellowish. Seeds longitudinal, pale brown, 3.5–4 mm long; aril cupular.
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