Japan Flora: Rhizomes creeping, the plants forming an extensive loose mat; leaves 3-5, approximate, elliptic or ovate- elliptic, rounded to very obtuse, rounded or scarcely cordate, rarely subacute at base, lustrous above, deep green, obsoletely short-toothed, the petioles 3-5 cm. long； scapes 10-25 cm. long, angled, the scales 1-3, broadly lanceolate to narrowly oblong, 7-10 mm. long； flowers 7-15, deep rose-colored, 12-15 mm. across, the bracts broadly lanceolate, membranous, acuminate, 5-8 mm. long, longer tlian the pedicels; calyx-segments narrowly ovate to broadly lanceolate, acuminate, 3-4 times as long as wide; styles exserted; capsules 7-8 mm. across. June-Aug. Thickets and shaded grassy places in mountains;

Hokkaido, Honshu (centr. and n. distr.); locally abundant. Kuriles, Kamchatka, e. Siberia, Korea, Manchuria, n. China, and N. America.