Ohwi 1985 Flora of Japan

Large perennial herb with erect, rather densely short-pubescent stems 80-100 cm. long; leaves rather thick, ovate-orbicular, acuminate, rounded at base, with coarse double teeth in the upper ones, scabrous above, prominently short-pilose beneath; glomerules on elongate axillary spikes, rather contiguous; achenes about 2 mm. long, the enveloping perianth pilose.

Aug.-Oct.

Hokkaido, Honshu, Shikoku, Kyushu; common.