Japan Flora: Glabrous biennial herb; stems erect, up to 1 m. long, terete, simple or sometimes branched, rather loosely leafy; leaves thin, deltoid or deltoid-cordate, acuminate, irregularly mucronate-toothed, whitish beneath, the petioles winged, clasping; upper leaves smaller and narrower, the petioles not clasping; inflorescence rather many-headed. Aug.

Hok­kaido, Honshu (mountains of centr. distr.). Korea, Man­churia, and Sakhalin (var.).