Japan Flora: Stems 40-80 cm. long, decumbent, with short, retrorsely appressed hairs; cauline leaves petiolate, 3- to 5-lobed to below the middle, shallowly cordate, 5-8 cm. wide, the lobes nearly rhombic, acute to acuminate, irregularly incised, appressed-pilose on the upper side and on the nerves beneath; stipules free, narrow； flowers in pairs, 1-1.5 cm. across; sepals short-pilose; petals pale rose with deeper colored nerves; free portion of styles about 3 mm. long. July-Oct. Lowlands and hills.

Hok­kaido, Honshu, Shikoku, Kyushu. Korea.

var. hastatum (Nakai) H.Hara. Lobes of upper leaves narrower, ovate-lanceolate to narrowly ovate, gradually narrowed at tip, with nearly equal teeth, the lateral lobes spreading; sepals loosely long-pilose. Near Nikko in Honshu. Korea, Manchuria, Amur, and China.

var. yezoense Hiyama. Leaves with appressed short pilose hairs beneath.  Hokkaido