Japan Flora: Plants glabrous, sometimes with filiform or capillary stolons, the rhizomes short; leaves laterally flattened, linear, arcuate, 3- to 7-nerved, 5-12(-20) cm. long, long-acuminate, the margin smooth; scapes 12-30 cm. long, 2- or 3-leaved; racemes 3-6 cm. long, densely to loosely many-flowered, the pedicels slender, straight, spreading, 5-12 mm. long, the bracts lanceolate, acute, or subobtuse, 1.5-2 mm. long, the bracteoles 3-fid; flowers white, 3.5-4 mm. long, the anthers pallid or pale purple; capsules ovoid-ellipsoid, slightly longer than the tepals; style slender, 0.6-1.5 mm. long. Rocks in mountains.

Honshu (Kanto, w. Tokaido, Kinki, and Chugoku Distr.), Kyushu. Korea.