Japan Flora: Green perennial 40-70 cm. high with rather stout erect stems; leaves rather long-peboled, narrowly ovate, 8-15 cm. long, 4-7 cm. wide, acuminate, obtuse to rounded at base, coarsely mucronate-toothed, puberulous on both surfaces especially on nerves; staminate inflorescence paniculate, 4-7 cm, long, peduncled, axillary; pistillate inflorescence on the upper part of the stems, 7-15 cm. long inclusive of the long peduncle, ascending, the branches spreading-puberulent on one side, the 2 lateral perianth-segments oblong or obliquely narrow-obovatc, obtuse, about 2.5 mm. long, accrescent after anthesis; achenes smooth, pale green, obliquely ovate-orbicular, 2.5-3 mm. long. Aug.-Sept. Woods in mountains;

Hokkaido, Honshu, Shikoku, Kyushu; rather common. China.