Perennial herbs, villous to glabrescent. Stems 40-80 cm, decumbent-stoloniferous or procumbent-ascending, slender, branched. Leaves palmately 3-foliolate, very shortly petiolate to sessile; stipules lanceolate, membranous, entire, adnate to petiole for most of their length, base sheathing, apex subulate; leaflets obovate to elliptic, (5-)8-15(-18) × 4-8(-12) mm, finely pubescent abaxially, glabrous adaxially, lateral veins 18-24 pairs, prominent on both surfaces, extending into teeth, base broadly cuneate, apex rounded, retuse. Flowers 1(-3), in axillary umbel; involucre absent; peduncle shorter than or equal to leaves; bracts minute, caducous; pedicels (3-)5-7(-9) mm. Calyx 8-9 × ca. 2 mm, veins 10; teeth subulate, 2-3 × length of tube. Corolla white or pink, becoming red to purple, 14-16 mm; standard oblanceolate-elliptic, claw short; wings and keel slightly shorter, with long claw equal to limbs. Ovary shortly stipitate. Legume ovate-oblong, 8-9 × ca. 3 mm, flat, apex with hooked beak. Seeds 1 or 2(-4), broadly ovoid. Fl. Jun-Sep.
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