Japan Flora: Rhizomes creeping, elongate, slender, 4-6 mm. in diameter; stems erect, sim-ple, sparsely hirsute, ascending above; leaves 5-7, narrowly oblong to elliptic, sometimes broadly ovate, 6-15 cm. long, 2-5 cm. wide, the tip abruptly narrowed, obtuse, rounded at the base, sessile or the lower ones short-petioled, pilose especially beneath; inflorescence paniculate, terminal, rather densely hirsute, the flowers whitish; style nearly as long as the ovary, the stigma entire or very shallowly 3-lobed.May-July. Woods and thickets in mountains; Hokkaido, Honshu, Shikoku, Kyushu; rather common.Korea, Manchuria, China，Ussuri, and Amur.

var. mandshurica Maxim. Plants larger, more leafy with about 10 narrowly oblong leaves. Kyushu (Tsushima). Korea and Manchuria.