Japan Flora: Rhizomes creeping; leaves 1-5, rarely to 8, approximate, elliptic, 4-7 cm. long, 2.5-45 cm. wide, rounded to obtuse at apex, rounded to subacute at base, deep green with paler nerves on upper side, rather loosely and obsoletely toothed, the petioles 3-8 cm. long; scapes 15-30 cm. long, angled, 5- to 12- flowered, often with 1 or sometimes 2 scales near the middle, the bracts linear-lanceolate, gradually narrowed from the base, long-acuminate, 5-8 mm. long, with a raised costa on the back, longer than to as long as the pedicels; flowers white, 12-15 mm. across; calyx-segments broadly lanceolate to narrowly ovate, 2.5-3 times as long as wide, acute; styles exserted; capsules 7-8 mm. across. June-July. Woods in foothills;

Hokkaido, Honshu, Shikoku, Kyushu. Korea, Manchuria, and Formosa.