Japan Flora: Slightly fleshy perennial with short rhizomes; radical leaves long-petiolate, stipulate, reniform-orbicular, 3-15 cm. long, 4-20 cm. wide, cordate, rarely truncate at base, palmately lobed and dentate, nearly glabrous to coarsely hirsute, the petioles 3-30 cm. long; scapes 5-35 cm. long, naked or rarely with a small leaf, glabrous to thinly glandular-pubescent; in­florescence 1-25 cm. long, broadly pyramidal, the pedicels 3- 20 mm. long, scattered glandular-pubescent; calyx-lobes spreading, ovate-oblong, 2-3 mm. long; petals spreading, white, sometimes reddish, the 3 upper ones broadly lanceolate, 3-4 mm. long, the lower 2 narrowly lanceolate, 5-15 mm. long, rarely few-toothed; stamens 4-7 mm. long, the filaments scarcely broadened above; styles short, slightly elongate after antliesis; capsules superior, ovoid, 4-6 mm. long； carpels con­nate nearly to the top; seeds narrowly fusiform, acute, 0.8 mm. long, smootli. July-Oct. Wet rocks in mountains. 

Hokkaido, Honshu, Shikoku, Kyushu; common and variable.  s. Sakhalin, s. Kuriles, Korea, Manchuria, Ussuri, and China.

f. partita (Makino) Ohwi. With cleft to parted leaves.

var. obtusocuneata (Makino) Nakai. Leaves ovate- orbicular or flabellate-orbicular, broadly cuneate to nearly truncate at base.  Along streams in mountains; Honshu, Shikoku, Kyushu.

var. crassifolia (Engl. & lrmsch.) Nakai.  Prominently long-hirsute, fleshier, the leaves shallowly lobed; scapes and pedicels with longer glandular hairs.  Oct.-Jan. Honshu (Awa and Izu lsls.).