Japan Flora: Root fleshy cylindric to flabellate, perpendicular; stems usually purplish; leaves long- petiolate, nearly deltoid-ovate, acuminate, broadly cordate and often auriculate at base, purplish on petioles and nerves, with bulbils in axils; inflorescence spicate, 1- to 3-nate, in leaf axils; flowers sessile, white, the staminate erect, rather loosely manyflowered, the pistillate pendulous, loosely few-flowered; stamens 6; capsules obovate-orbicular. Aug.-Sept.

Hokkaido, Honshu, Shikoku, Kyushu; frequently planted. Korea, China, and Formosa.