Japan Flora: Bulbs small, with few scales; stems 30-100 cm. long, terete, glabrous, erect; leaves sessile, linear, 5-13 cm. long, 3-6 mm. wide, narrowed at both ends, glabrous, the margin often with semirounded short tubercles; flowers few, nodding, orange-red or yellowish, with obsolete spots, the tepals 3-4 cm. long, oblanceolate, re­curved from below the middle, the nectary grooves slightly hairy on margin; style shorter than the ovary, erect; capsules narrowly oblong, 3-4 cm. long；July-Aug.

Honshu, Shi­koku, Kyushu. Ryukyus, Formosa, China, Manchuria, Korea, and Amur.