USGS - science for a changing world

Northern Prairie Wildlife Research Center

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

Wetland Plants and Plant Communities of Minnesota and Wisconsin


(Carex atherodes Sprengel)

Slough sedge
Figure 17 - Perigynium

SEDGE FAMILY (Cyperaceae)


FIELD CHARACTERISTICS: Herbaceous perennial from long, coarse rhizomes. Triangular stems are stout, 3-15 dm. in height, growing singly or a 0 few together. Leaf sheaths are densely covered with fuzzy hairs (see photograph). Leaf blades are 4-10 mm. wide. Spikes number several with pistillate spikes 2-10 cm. long and 1 cm. wide. Staminate spikes are 2-6 cm. long. Perigynia are strongly ribbed, ribs numbering 12-20. Perigynia are 7-10 mm. long, with divergent teeth 1.5- 2.5(3) mm. long. Achene is more or less triangular in shape.

Slough sedge resembles lake sedge (C. lacustris); however, lake sedge leaf sheaths are smooth, not covered with fuzzy hairs, and the perigynia of lake sedge have two short teeth instead of the long, widely-spread teeth of slough sedge.

ECOLOGICAL NOTES: Slough sedge is common in sedge meadows, shallow marshes and lake shores, often found in shallow water. It is one of the most frequently encountered sedges of prairie potholes in southern and western Minnesota.

SOURCE: Voss (1972); and Gleason and Cronquist (1991).

Previous Section -- Lake Sedge (Carex lacustris Willd.)
Return to Contents
Next Section -- Bottlebrush Sedge (Carex comosa Boott)

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:30:56 EST
Sioux Falls, SD [sdww55]