A procumbent to decumbent, rather closely branched shrublet. Branches up to 0.5 m long; branchlets ascending, short-villous. Leaflets linear to sausage-shaped, 1.5-3 mm long, 0.4-0.7 mm thick, slightly incurved (not spreading), subterete, sparsely puberulous, glabrescent, apically mucronulate. Flowers solitary (or in pairs) on the tips of densely leafy branchlets (sometimes soon appearing lateral by the development of a branchlet in the axil of the uppermost leaf). Bract subulate, 1.8-2.4 mm long, adaxially canaliculate, puberulous, mucronulate. Pedicel ±1 mm long, white-villous. Bracteoles slightly smaller than the bract. Calyx tube broadly campanulate, with dense, white, spreading pubescence; lobes narrowly triangular, ±2 mm long, ± puberulous, ending in spinelets ±0.6 mm long. Petals bright or light yellow, turning ± violet when fading. Standard ±8 x 5.5 mm, apically incurved and acuminate; short-tomentulose on the back. Wing blades rectangular-elliptic, ±3.4 x 1.7 mm, puberulous along lower margin. Keel blade lunate, tomentulose, ±5 x 2.5 mm excluding an apical, linear, 1.7-2 mm long process attached slightly below the keel apex; keel apically rounded, with slightly concave upper margin. Pistil pubescent on basal and upper parts of the ovary and style base. Ripe pods not seen.
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Like A. glossoides but more procumbent, to 50 cm, with mucronulate leaves and puberulous calyx.