USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Aquatic and Wetland Vascular Plants of the Northern Great Plains

62. Cyperaceae, the Sedge Family

2. Carex L. -- Sedge

45. Carex sartwellii Dewey


Colonial from long, black rhizomes; culms arising singly or few together, stiff, sharply trigonous, 3-8 dm long, exceeding the leaves. Leaves 2.5-4 mm wide, few per culm, the lowest much reduced, lacking blades; sheaths green-striate ventrally, prolonged into a conspicuous hyaline, tubular ligule. Spikes bisexual or the upper ones often staminate, otherwise androgynous, aggregate or the lower ones separate, ovoid, 5-10 mm long, in heads narrowly oblong to conic, 3-6 cm long; bracts reduced, the lower ones sometimes setaceous and exceeding the spike; scales brown with a prominent green midvein, acute to cuspidate, about equaling the perigynia. Perigynia tan to brown, plano-convex, ovate, 2.5-3.5 mm long, ca. 1/2 as wide, finely nerved on both sides, sharp-edged, tapered into the serrulate, oblique to minutely bidentate beak which is ca. 1/4 the length of the entire perigynium; achenes lenticular, 1-1.5 mm long; stigmas 2. Jun--Jul. Wet meadows, marshes, shores, stream banks and ditches; frequent in the n and e parts, uncommon w; (NY and Ont. to B.C., s to IN, MO, NE and CO).
GIF- Species Photo/Drawing
GIF- Distribution Map

Map key

Carex sartwellii (from Hermann 1970).  

Previous Section -- Carex rostrata Stokes ex With. -- Beaked sedge
Return to Family -- Cyperaceae - The Sedge Family
Next Section -- Carex scoparia Schkuhr ex Willd. -- Broom sedge

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/plants/vascplnt/species/csar.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:41:50 EST
Sioux Falls, SD [sdww54]