Japan Flora: Rather firm perennial; culms 20-40 cm. long, slender, obtusely angled, erect, smooth, rather firm, leafy only at base; leaves stiff, 1.5-3 mm wide; inflorescence a solitary, terminal, globular head 15 across, with numerous sessile spikelets; involucral bracts leaflike, spreading or reflexed; spikelets 6-7 mm. long, some­what distichously 5-6 scaled, tawny-stramineous; achenes ob­ovate, dark brown, 15-1.8 mm. long, smooth, short-setulose on upper mar먼n, the beak small, conical, the style long, un­divided; bristles 6, half as long as the achene, antrorsely scabrous. Aug.-Oct. Wet sunny grassy places.

Honshu (Kadzusa Prov. and westw.), Shikoku, Kyushu. Ryukyus, formosa, China, Indochina, India, and Malaysia.