Japan Flora: Leaf-blades to 10 mm. wide, bright green, not glaucous beneath; spikes 4 or 5, erect, contiguous or approximate, the terminal staminate, 3-5 cm. long, dightly ferrugineous, the pistillate 2-5 cm. long, the lower occasionally nodding, the lowest bract leaflike, nearly erect; pistillate scales ovate, pale or often obscurely tawny; perigynia 3.5-4 mm. long. June-July. Coniferous woods.
Hokkaido, Honshu (centr. distr.); rather rare. Korea, Manchuria, Ussuri, and Sakhalin.