Shrub to 2 m tall. Branchlets glabrous, reddish brown, lenticellate. Phyllodes narrowly elliptic, markedly falcate, 14–18 cm long, 5–10 (–14) mm wide, glabrous, acute with a callus point; longitudinal nerves 3 (or 4), prominent, with secondary nerves indistinct, forming open anastomoses; gland basal, prominent; pulvinus 1.5–2 mm long. Heads single or in pairs on short axillary axis, c. 50-flowered, lemon-yellow; peduncles glabrous, 10–20 mm long; basal bract minute. Flowers 5-merous; calyx c. 1.5 mm long, divided almost to base, ciliolate; corolla deeply divided, with lobes 1.8–2 mm long, glabrous; stamens 3–4 mm long; ovary glabrous. Pods shortly stipitate, linear, straight, 7–10 cm long, 5–7 mm wide, glabrous; thinly coriaceous, shallowly to moderately constricted between seeds and prominently rounded over them alternately on each valve. Seeds longitudinal, dark brown, depressed elliptic, 3–3.5 mm long, c. 2.5 mm wide; aril clavate.
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