Japan Flora: Tall, often gregarious perennial; stems erect, 50-180 cm. long, obtusely angled, simple or slightly branched, ascending- or slightly recurved-puberulent; leaves deep green, ovate, 8-15 cm. long, 4-8 cm. wide, acuminate^ rounded or shallowly cordate at base, short-pilose on both sides, especially on nerves beneath, coarsely toothed, the petioles 2-5 cm. long, much diorter than the blade, ascending-pubcrulent; inflorescence narrowly pyramidal, the pistillate toward the upper portion of the plant. July-Oct. Moist woods and river banks in lowlands and foothills;

Hokkaido, Honshu (centr. and n. distr.). Kuriles, Kamchatka, Sakhalin, and e. Siberia.