A decumbent or ascending rather closely branched shrublet, with branches up to ±0.5 m long, rigid, straight, spreading; young branches partly puberulous, partly glabrous. Leaves rather densely set; long-shoot leaves ± erect, tightly pressed against the branches; their central leaflet 1-2 mm long, oviform to oblong, terete, mucronate; lateral leaflets subglobose-ovoid, 0.3-0.7 mm long, leaflets of axillary short-shoots generally ±0.7 mm long or less. Flowers solitary at the branchlet tips. Bract subulate-lanceolate, 1.2-1.6 x 0.4 mm, subglabrous, mucronate. Pedicel 0.8-1.2 mm long, puberulous. Bracteoles 0.8-1.5 mm long. Calyx tube puberulous; lobes triangular, 1-1.5 mm long, including their apical ±0.3 mm long spinelets; green, marginally somewhat thickened. Petals light yellow (or standard partly violet) with short claws. Standard blade 6.2-7 x 5-5.8 mm, acute, with ± incurved sides; back short-sericeous except on the base. Wing blades very short, rectangular-elliptic, ±2.8 x 1.7 mm, glabrous. Keel blades rostrate, abruptly upcurved near the base and produced into a rather narrow apex, 5.5-6 mm long, ±2.2 mm broad, glabrous, with indistinct basal puckering. Anthers markedly different in size (Pistil short-sericeous on the upper parts of the ovary; style narrow, curved. Pod broadly triangular-ovate, 3.5-4 x ±3 mm, sparsely short-sericeous on most parts.
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Sprawling shrublet with branches to 50 cm. Leaves 3-foliolate, leaflets erect, somewhat pressed against stems, terete, ovoid-oblong, pointed, glabrous. Flowers solitary at branch tips, pale yellow, standard partly purple, wings ± half the length of keel, glabrous, keel with rostrate tip, glabrous, calyx shortly hairy, lobes triangular, spine-tipped.