Japan Flora: Glabrescent perennial with long-creeping entwined and matted branches; leaves radical, long-petioled, the stipules lanceolate, acuminate, membranous, greenish, the leaflets 3, obovate to obovate-orbicular, 15-25 mm. long, 10-25 mm. wide, emarginate and rounded at apex, green with a white band below the middle; peduncles or scapes longer than the leaves; heads many-flowered, globose, the pedicels recurved in fruit; flowers white with a greenish hue, sometimes reddish; legumes 4- to 6-seeded. Apr.-July.

Naturalized and very common in our area.  Europe, n. Africa, and w. Asia.