Isolepis cernua var. cernua

Scirpus cernuus Vahl var. californicus (Torr.) Beetle, Rhodora 46: 145. 1944.
Isolepis leptocaulis Torr. Pacif. R. R. Rep. 4» ( «h 153. 1857.
Isolepis pygmaea var. californica Torr. U. S. Expl. Exp. 17: 476. 1874.
Scirpus sublilis Bock. Allg. Bot. Zeits. 2: 54. 1896.
Fibrous-rooted, annual or perennial, cespitose or spreading from short stolons; culms many, very variable in length, 0.5-4 dm. long according to habitat, terete or angular, smooth, the sheaths reddish at the base, green above, mucronate-tipped or with a short, smooth blade;
* Corrected to koilolepis in the Index. involucral bract about equaling or rarely exceeding the 3-8-flowered, single or rarely paired spikelets; glumes ca. 1.5 mm. long, from solid chocolate-brown to pale green; style trifid, reddish; bristles absent; achene ca. 0.75 mm. long, whitish to dark brown, rugulose, planoconvex to obtusely trigonous, minutely apiculate.
Type locality: Lower Sacramento, California.
Distribution: Wet places near the coast; British Columbia, south to Mexico; Florida (where probably introduced).