Herbs, perennial, 60-80 cm tall. Stems much branched at base, procumbent or ascending, densely white hirsute or adpressed strigulose. Leaves 3-foliolate; leaflets obcordate or obtriangular, terminal one 4-9 × 2-7 mm, abaxially densely villous or hoary, adaxially sparsely hairy, subglabrous, or sparsely strigulose, base cuneate, apex emarginate or subtruncate, mucronate. Racemes axillary, distinctly overtopping leaves; peduncle densely hirsute. Calyx ca. 7 mm, 5-parted; lobes linear-lanceolate. Corolla pink, pale purplish red, white, or yellowish, slightly overtopping calyx; standard obovate, ca. 1.3 × 0.6 cm, claw with auriculate appendage at upper part; wings oblong, ca. 5 × 1 mm (claw ca. 2.5 mm); keel subequal to standard. Cleistogamous flowers in leaf axils, sessile, fruit-bearing. Legume narrowly ovoid, subequal to persistent calyx, densely hirsute, apex long rostrate.
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