Shrubby tree 3–6 m high. Bark grey and fibrous on main trunk to c. 2 m above ground, ‘Minni Ritchi’ (red and exfoliating in narrow curly strips) on juvenile plants and some lateral branches of adults. Branchlets ± terete, obscurely ridged, glabrous. Phyllodes linear, tapered towards base, sometimes curved towards apex, 12–23 cm long, usually 0.9–2.3 mm wide, acuminate, flattened but rather thick, glabrous, becoming subglaucous; finely and ± uniformly striate by numerous, closely spaced veins; gland 1, inconspicuous, basal. Inflorescences condensed axillary racemes 1–3 mm long; spikes light golden; peduncles 2–10 mm long. Flowers 5-merous; calyx 0.6–1.3 mm long, dissected for ⅙–⅓, puberulous; corolla 1.4–2.1 mm long, dissected for ½–⅔, ±nerveless, glabrous; ovary pubescent. Pods submoniliform, raised over and constricted between seeds, straight to curved, 2.5–9 cm long, 2–4 mm wide, firmly chartaceous and brittle, ± glabrous, longitudinally wrinkled. Seeds longitudinal, oblong-elliptic, 4–4.5 mm long, shiny, black; pleurogram with narrow, pale halo; areole open.
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