Japan Flora: Rather fleshy gla­brous herb 6-20 cm. high, with brown membranous withering sheaths at base; sterile blade below the fertile panicle, sessile, deltoid, 2-3 cm. long and as wide, pinnately divided, the seg­ments linear to lanceolate, pinnately lobed to entire，sessile, ob­tuse, the lowest lateral segments pinnately veined, 1.5-2 cm. long; fertile panicle rather dense, pyramidal, subsessile or very shortly pedunculate, usually not longer than the sterile blade. Aug, Alpine regions.

Honshu (centr. distr.); very rare. Sakhalin, n. Kuriles, Kamchatka, Siberia to Europe, and N. America.