Shrub or tree to 10 m tall. Bark longitudinally stringy, grey-brown. Branchlets angular towards apices, yellow-brown to purplish brown, appressed-pubescent, later glabrous. Phyllodes linear, ±straight to curved, 13–26 cm long, 2–6 (–8) mm wide, acuminate, coriaceous, inconspicuously multistriate; midvein the most prominent; minor veins 8–10 per mm, not anastomosing; gland 1, basal, to 2 mm above pulvinus. Inflorescences racemose; raceme axes 1–6 mm long. Spikes 2–4.5 cm long, bright yellow. Flowers 5-merous; calyx 0.7–1.2 mm long, dissected to ¼–⅓; corolla 1.7–2.1 mm long, dissected to ½; ovary ±pubescent. Pods linear, slightly constricted between and slightly raised over seeds, to 11 cm long, 3–4 mm wide, chartaceous, glabrous. Seeds longitudinal, elliptic-oblong, 3–4.5 mm long, dark brown to brownish black; areole short, surrounded by a U-shaped pleurogram with a pale halo.
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