Japan Flora: Roots somewhat thickened; leaves green, flat, smooth, 40-60 cm. long, 2.5-4 cm. wide, arcuate above; scapes 80-100 cm. long, loosely few-scaled; inflorescence forked, loosely several- flowered, the pedicels to 2 cm. long, often adnate to the axis at base, the bracts ovate-deltoid, membranous, 4-10 mm. long; flowers about 10 cm. long, orange-red, double, sterile, the perianth-tube about 2 cm. long, the inner segments oblong, with cross veinlets. July-Aug. Hills and low mountains.

Hokkaido, Honshu, Shikoku, Kyushu; common.  Thc typical phase with single fertile flowers occurs from Europe to Siberia.