A low, decumbent or procumbent shrublet with branches up to ±0.6 m long or more, reaching ±0.15-0.4 m above the ground. Branches rigid, rather straight, reddish brown, sparsely appressed-puberulous, not ending in thorns. Leaflets spreading, subulate-acicular, 1.2-8(-10) mm long (the middle leaflet in each long-shoot leaf often much longer (5-10 mm) than the lateral leaflets), 0.4-0.8 mm thick at the base, glabrous, straight, rigid, ending in a sharp spinelet. Flowers solitary (or in pairs) on the tips of the outermost, ±1.5-3 mm long, internodes of lateral branchlets. Bract subulate, 1.3-2.2 mm long, ending in a spinelet ±0.7 mm long. Pedicel 0.8-1.4 mm long, puberulous. Bracteoles 0.5-1.7 mm long. Calyx tube with sparse, short, appressed hairs; lobes narrowly triangular, 1.5-2.6 mm long, ending in spines ±1 mm long. Petals light yellow or partly purplish or violet. Standard blade 5.3-6.5 x 3.7-4.7 mm; short-sericeous on two-thirds to three-quarters of the back (partly glabrous on basal parts), apex incurved, subacute. Wing blades 2.7-3.5 x 1.2-1.6 mm, glabrous. Keel blades lunate, upcurved, 4.2-4.5 x 2-2.3 mm, obtuse with concave upper margin and apical-lower parts (60-80%) pubescent. Pistil pubescent on upper parts of the ovary and on the style base. Pod triangularly lanceolate, 9-10 x 3.5-4.2 mm, partly short-sericeous.
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Rigid, sprawling shrublet with branches to 60 cm. Leaves 3-foliolate, leaflets needle-like, middle leaflets often much longer, straight, rigid, pungent, glabrous. Flowers 1 or 2 at branch tips, pale yellow, partly purplish or violet, wings glabrous, keel hairy, calyx adpressed-hairy, lobes narrowly triangular, needle-like, hairy.