Dense shrub 1–2 m high. Branchlets prominently ribbed, glabrous. Stipules caducous. Phyllodes rather crowded, ascending, obtriangular to obdeltate with a prominent gland-bearing angle on adaxial margin above the middle, sometimes asymmetrically trapeziform with 2 gland-bearing angles, with adaxial proximal margin ± contiguous with branchlet, ± obliquely truncate, 7–17 mm long, 5–15 mm wide, l: w ratio = 1–2, sometimes larger, pungent, glabrous; midrib near lower margin. Inflorescences extremely reduced 1-(3-or 4-) headed racemes with axes to c. 0.5 mm long; peduncles 6–12 mm long, glabrous; heads globular, 8–15-flowered, pale yellow. Flowers 4-merous; sepals united to near apex, with lobes broadly triangular. Pods linear, curved, to 6 cm long, 2.5–3.5 mm wide, crustaceous, blackish, glabrous or subglabrous; margins thick, yellowish. Seeds longitudinal, oblong, 2.5–3 mm long, shiny, brown; aril scarcely clavate.
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