Trailing or ascending perennial herb; stems to 50 cm long, glabrous or with sparse hairs. Leaves palmately trifoliolate, to c. 10 cm long; leaflets lanceolate or oblanceolate to oblong, 5–25(–40) mm long, 2–8(–22) mm wide, both surfaces usually sparsely hairy, upper surface dotted with glands, apices acute or obtuse, margins entire; stipules lanceolate to ovate, to c. 4 mm long. Inflorescence rachis 1–3 cm long; peduncles 2–10 cm long, much longer than subtending leaves; flowers mostly in 3s along rachis; pedicels to c. 1 mm long; bract suborbicular, c. 1 mm long, hairy. Calyx ovoid, 4–5 mm long, white-pubescent, teeth subequal, longer or shorter than calyx tube, lower one slightly larger and longer than others; corolla 4–6 mm long, bluish-pink, lilac or white. Pod ovoid, c. 3 mm long, included in calyx, white-pubescent, brownish; seed 1, c. 2 mm long, yellowish. Flowers mainly Oct.–Jan.