Japan Flora: Rhizomes very slender, long-creeping; leaves 1-3, approximate, dull, deep green but paler along the nerves above, pale green beneath, reniform-orbicular or subreniform, 1-3 cm. long, 1.5-4 cm. wide, obsoletely toothed, rounded at apex, the petioles 2-5 cm. long; scapes 10-20 cm. long, rarely with a minute scale; flowers 2-4, 1-1.2 cm. across, white to greenish, the bracts linear-lanceolate, 1-2 mm. long, much shorter than the pedicel; calyx-segments suborbicular or depressed-deltoid, obtuse to rounded at the tip; style exserted; capsules 5-6 mm. across. Damp coniferous woods in mountains;

Hokkaido, Honshu (centr. and n. distr.). s. Kuriles, Sakhalin, Korea, Manchuria, and Amur.