Herbs, prostrate or spreading, to 60 cm tall. Leaves mostly 3-foliolate, rarely 1-foliolate; petiole 1-2 cm; terminal leaflet blade nearly orbicular or elliptic to ovate, 2-6 × 1.5-3 cm, abaxially gray-yellow pubescent, base rounded or cordate, apex rounded or emarginate. Racemes terminal, 3-6 cm, densely flowered. Pedicel ca. 4 mm, sparsely white villous. Calyx 5-parted; lower lobes ca. 2 × as long as upper ones, white villous. Corolla pale purple, ca. 6 mm; standard obovate, base attenuate. Ovary glabrous, 1-or 2-ovuled. Legume enclosed by calyx, black-brown at maturity, small; articles 1 or 2, elliptic, ca. 2.5 mm, swollen, glabrous, slightly lucid. Fl. and fr. Aug-Oct. 2n = 22.
Open waste slopes, thickets at elevations below 900 metres. Dry grassland, open forest, waste places, roadsides, sandy areas and occasionally in deciduous forest, but not in waterlogged locations, at elevations up to 2,000 metres310.
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