Japan Flora: Thinly soft-pubescent; stems 10- 20 cm. long, thickened and bearing bulbils at base; stolons absent; radical leaves prominent, long-petioled, reniform- orbicular, 5-20 mm. long, 8-30 mm. wide, cordate, very shal- lowly toothed; flowers rather many, pale green; calyx-lobes spreading, depressed-orbicular, about 1 mm. long; stamens very short, about 0.5 mm. long; capsules subinferior, cup¬shaped, subtruncate; seeds broadly ovoid, about 0.6 mm. long, 1-ribbed, minutely mammillate. Mar.-May.
Hokkaido (sw. distr.), Honshu, Shikoku, Kyushu; rather common. Korea and Manchuria.