Japan Flora: Mostly tufted; culms slender, 15-30 cm. long; leaves 1-2 mm. wide; corymbs 4-6, narrow, short, erect, with a few spikelets; spike­lets lanceolate, dark brown, 5-6 mm. long; achenes narrowly oblong, 2-2.5 mm. long, light tawny, nearly smooth, the beak nearly 2 mm. long, glabrous; bristles 6, slightly longer than the achenes, erect, slender, retrorsely scabrous. High moors and wet slopes in high mountains.

sw. Hokkaido, Honshu (Mount Hyonosen in Tajima Prov. and eastward).