Japan Flora: Rhizomes short-creeping, loosely tufted, dark brown fibrous; culms 10-30 cm. long, glabrous, often nodding; leaf-blades flat, soft, nearly glabrous, 3-4 mm. wide, the sheath often yellow-tawny; spikes 5-10, the terminal staminate, broadly linear, loosely rather many-flowered, 1-2.5 cm. long, ferrugineous-tawny, the lateral pistillate, broadly linear, loosely rather many-flowered, 2-4 cm. long, peduncled, the upper approximate, the lower 2 or 3 distant, the lower bracts leaflike, sheathing; pistillate scales lanceolate-ovate, acute, fulvous, with a green 3-nerved midrib; perigynia longer than the scales, 7-8 mm. long, appressed, linear-lanceolate, 3-angled, thinly membranous, pale green, nerveless, glabrous, slightly lustrous, gradually long-beaked, with an obliquely truncate hyaline mouth; stigmas 3, persistent, elongate, slen­der, brownish.- Apr.-June.

Honshu (Kinki and Chugoku Distr.), Shikoku, Kyushu; rather rare. Korea, Manchuria, and Ussuri.