Japan Flora: Closely akin to the preceding, but rhizomes absent; culms tufted, flaccid; leaves 2-4 mm. wide; spikelets 3-8 nun. long, 1-1.5 mm. wide; scales oblong to ob­long-lanceolate, nearly 1 mm. long, obtuse and emarginate, with a green keel excurrent as a slightly recurved mucro; achenes 2/5-1/2 as long as the scale, white, broadly obovate, obtusely 3-angled; stigmas 3. Aug.-Nov. Wet places. 

Honshu, Shikoku, Kyushu. Ryukyus, Formosa, s. Korea, China, Indochina, India, Malaysia, tropical Australia, and tropical Africa.