A low shrublet with decumbent, stiff, rigid, up to 0.6 m long branches. Young branches with sparse, short, appressed pubescence. Long-shoot leaves subtended by a woody base extended into a more than 2 mm long, glabrous, recurved, woody spur or spine. Leaflets linear-subulate, 1-3 mm long and ±0.5 mm thick, subterete, acute, glabrous. Flowers solitary at the ends of short lateral branches. Bract and bracteoles oblong or linear-subulate, 1-2.5 mm long, partly puberulous. Pedicel 1.5-2.5 mm long, short-sericeous. Calyx infundibular-campanulate, sparsely short-sericeous; lobes narrowly triangular, 2.3-3.5 mm long, acute, with green, thickened margins. Petals yellow or partly purple-shaded. Standard blade elliptic, 11-12.3 x 8-9.5 mm, with acute, slightly incurved apex, sericeous on the back. Wing blades oblong-elliptic, 7-8.7 x 3-4.2 mm, glabrous. Keel blades somewhat rostrate, 9.2-10.2 x 3.2-4 mm. Pistil: ovary sericeous on most parts; ovules 6-8; style glabrous, slender; stigma elongate, forwardly directed. Pod broadly lanceolate, 11-13 x 4-5 mm, rather terete, brown when ripe.
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Rigid, decumbent shrublet to 60 cm. Leaves 3-foliolate, leaf bases forming recurved, woody spines, leaflets subterete, glabrous. Flowers solitary on short shoots, yellow or partly purple, wings glabrous, keel rostrate, glabrous, calyx shortly and sparsely hairy, lobes triangular, with thickened margins.