Intricate compact or spreading glabrous shrub 0.2-1.5 m high. Branches substriate by ribs, ±pruinose. Branchlets numerous, short, spreading, spinescent, commonly aphyllous. Phyllodes sometimes with some subfasciculate on short branchlets, ascending to erect, ±narrowly oblong, straight or very shallowly sigmoid, usually 3-8 mm long, 1-2 mm wide, excentrically mucronulate, green; midrib obscure or slightly raised; lateral nerves absent. Inflorescences rudimentary 1-headed racemes with axes > 0.5 mm long; peduncles 4-12 mm long; heads globular, usually 3-3.5 mm diam. and 8-18-flowered, bright lemon yellow; bracteoles absent or few. Flowers 5-merous; sepals united into a ±truncate calyx; petals nerveless. Pods prominently rounded over seeds on alternate sides, to 6 cm long, 3-5 mm wide, thinly coriaceous, pruinose. Seeds longitudinal, oblong, 2.5 mm long, dark brown, verruculose; aril clavate.
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