Shrub or slender tree to 7.5 m high. Branchlets prominently angled, fawn or yellowish, glabrous, resinous. Phyllodes ±erect, very narrowly elliptic to almost linear, flat, straight or very slightly incurved, (5–) 9–17 cm long, (4–) 6–17 mm wide, thinly coriaceous to coriaceous, yellow-green, ciliolate to ± glabrous, resinous; main veins yellowish, with prominent midvein and 1 subprominent vein either side, with 6–10 minor parallel rarely anastomosing veins per mm; gland basal, ± elliptic, c. 1 mm long. Peduncles glabrous or rarely subglabrous. Spikes solitary, axillary, yellow; receptacle with dense short patent hairs. Flowers 5-merous; calyx 0.6–0.8 mm long; sepals free, 0.05–0.1 mm wide, with rounded apices, pubescent; corolla 1.2–1.6 mm long, dissected to ⅖ of length, with lower half pubescent especially on midrib; ovary pubescent. Pods erect, linear, straight-sided or very slightly constricted between seeds, undulate, straight, 2.7–5.5 cm long, 2.5–4.7 mm wide, yellowish brown, sparsely pubescent especially along margins, very resinous when young; margins ±prominent. Seeds 5–10, slightly oblique or longitudinal, broadly oblong to broadly elliptic, depressed dorsiventrally, 2–3.2 mm long, blackish brown; areole slightly paler, closed, with pale halo around pleurogram; funicle folded 2 or 3 times, cream-coloured.
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