Shrub or tree to 9 m high, often with root suckers. Bark furrowed, black or grey-brown. Branchlets slightly angular towards apices, becoming terete, orange-red or red-brown, ±pruinose, velutinous when young, later glabrous and scurfy. Phyllodes very narrowly elliptic to narrowly elliptic, straight to falcate, 6.5–12.5 cm long, 15–30 mm wide (juvenile phyllodes tomentose and 7–9 cm long by c. 2 cm wide), glabrous or slightly scurfy, with 3 or 5 slightly prominent free main veins; minor veins 4–7 per mm, parallel, not anastomosing; gland 1, large, basal. Spikes 3–5 cm long. Flowers 5-or rarely 4-merous; calyx 0.7–0.8 mm long, truncate or sinuolate, glabrous or almost so; corolla 1.3–1.5 mm long; ovary glabrous. Pods linear, slightly constricted and raised over seeds, 2–11 cm long, 2–4 mm wide, chartaceous, scurfy. Seeds longitudinal, oblong-elliptic, 3.5–6 mm long, black; areole open, narrow, elongate.
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