A glabrous or glabrescent creeping perennial of indeterminate size, rooting at the nodes. Roots adventitious except for the tap root developed from the primary root of the seedling. Stolons up to 50 cm long, 1.9-4.0 mm in diameter; internodes up to 6 cm long. Leaves palmately trifoliate; leaflets 10-35 mm long, obovate or obcordate, minutely denticulate, usually with a whitish angled band towardsthe base, pinnately nerved with the lateral veins thin and nearly straight. Petioles erect, commonly up to 7 cm long and sometimes longer; stipules ovate to oblong, shortly subulate at the apex, striate. Inflorescence an axillary racemose head, 15-20 mm in diameter, globular, usually bearing 20-40 flowers; peduncles usually longer than the petioles. Flowers white or pink, scented; pedicels up to 6 mm long; erect at first, reflexing after anthesis. Calyx tube 2-4 mm long; campanulate, white with green veins; teeth narrowly triangular, approximately half as long as the tube. Flower zygomorphic, with five petals. The standard, erect, oblong, 8-16 mm long, persistent, folding over the pod; the wings, shorter than the standard each with blade and claw; the two petals of the keel are more or less fused along their adjoining margins and slightly adherent to the wings. The keel encloses nine fused stamens and one free one. Pod sessile, 4-5 mm long, oblong, usually 3-6 seeded, compressed between seeds. Seeds heart-shaped, 1 0 x 1 .1 x 0 6 mm, with a mean 1000-seed weight of 0 5-0.8 g.