Japan Flora: Soft green annual; culms 3-20 cm. long; leaves 1-2 mm. wide; inflorescence capitate, globular, 5-15 mm. in diameter, the bracts 3-6, 4-10 cm. long; spikelets numerous, dense, 3-5 mm. long, 1.5 mm. wide, some­what compressed; scales spirally arranged or inconspicuously 2-   ranked, broadly lanceolate, 1.5 mm. long, hyaline, slenderly 3- to 5-nerved, scarcely 1比eled, very acute and mucronate at tip, the mucro extremely short, erect or nearly so, smooth or bearing a few papillose processes; achenes 3/5-1/2 as long as the scale, narrowly ovate-oblong, unequally biconvex, acutely angled and narrowly winged. Aug.-Oct.

Hokkaido, Hon­shu (Kinki Distr. and eastw.) Korea.