Japan Flora: Roots fibrous; culms slender, leafy, 40 cm. long; leaves about 6, shorter than the culm, soft, 1.5-2 mm. wide, the sheaths long, inflated; inflorescence divided in 2 parts, spikelike, oblong, 8- 12 mm. long; spikelets rather numerous, oblong-lanceolate, 5 mm. long, 1-flowered, with 4 or 5 scales; scales stramineous, the fertile prominently awned at apex; bristles 6, slightly longer than the achene, antrorsely scabrous; achenes oblong, 3-angled, ferrugineous, minutely reticulate throughout.

Re­ported in Kyushu (Nagasaki) by Kuekenthal.