Japan Flora: Glabrous rather fleshy herb 5-25 cm. high; stipe solitary, covered with brown membranous slightly fibrous sheaths at base; sterile blade at or above the middle of the stipe, simply pinnate, 3-6 cm. long, 1.2-2.2 cm. wide, sessile or nearly so; pinnae 7-11, flabellate, reniform, or broadly cuneate 7-13 mm. long, 5-15 mm. wide, truncaate to cuneate and entire on lower margin, crenulate or rarely incised on upper margin,  palmately veined, short-petiolulate; fertile spike 1.5-6 cm. long, on a peduncle twice as long July-Sept. Sunny alpine slopes.

Hokkaido, Honshu (centr. and n. distr.); rare. Korea, Kuriles, Sakhalin, Kamchatka, Siberia, Himalayas, Europe, N. and S. America.