A decumbent or ascending shrublet 0.3-0.6(-1) m tall, sometimes loosely and patently spreading on the ground. Branches rather slender, copiously branched. Young branches reddish, short-villous. Leaflets spreading, subulate-acicular, 1.5-4.5 mm long, 0.5-1 mm thick, straight, rigid, green, glabrous, ending in a sharp, yellow, 0.4-1 mm long spinelet. Flowers solitary or 2 or 3 on tips of branchlets, when more than one then at a distance of less than 2.5 mm from each other. Bract subulate, 2-3.2 mm long, abaxially glabrous, apical half comprising a spinelet. Pedicel 1-1.3 mm long, white-puberulous. Bracteoles 1.7-2.7 mm long. Calyx tube tomentulose; lobes triangular, 2-3 mm long, green, subglabrous, ending in a spinelet ±1 mm long. Petals light yellow, especially standard turning brown when fading. Standard blade 6-7 x 5-5.5 mm, apically slightly incurved, sericeous on the back. Wing blades 4.4-5 x 1.4-1.7 mm, broadest at the base, tapering, somewhat hairy on lower basal parts; with only 1-2 diffuse rows of small folds on basal upper parts. Keel blades rostrate, curved upwards and tapering, subacute, ±4.7-5.5 mm long, 2.2-2.4 mm broad near middle, sericeous at least on the lower half. Pistil pubescent on upper part of ovary. Pod triangular-ovate, ±8 x 4 mm, sericeous to tomentose at least on apical and basal parts.
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Sprawling shrublet, 0.3-1 m. Leaves 3-foliolate, leaflets awl-shaped, subterete, straight, rigid, spine-tipped, glabrous. Flowers 1-3 at branch tips, pale yellow, fading brown, wings somewhat hairy, keel silky, strongly beaked, calyx subglabrous, lobes triangular, spine-tipped, subglabrous.