Japan Flora: Smaller; leaves 2-3.5 mm. wide; flowers including the capsule 2-2.5 mm. long, tawny or brown; perianth-segments lanceolate, acute, all equal in length; stamens 2/3 as long as the perianth, the anthers oblong, as long as or longer than the filaments; capsule nearly as long as the perianth; caruncle minute and indistinct.
Honshu, Shikoku, Kyushu; rare. Korea, China, Kuriles, Sakhalin to Siberia, n. Europe, and Alaska.