Skip to main content

Schweinitz's flat-sedge

Cyperus schweinitzii Torr.

Images

Click on image to view full size

Schweinitz's flat-sedge
Schweinitz's flat-sedge
Schweinitz's flat-sedge  inflorescence
Schweinitz's flat-sedge
Schweinitz's flat-sedge
Schweinitz's flat-sedge

Morphology

Culm
Erect or ascending, 3-sided, usually rough near tip.
Leaves
Usually flat but edges occasionally rolled under, seldom reaching inflorescence, up to 1/3 inch wide; margins very rough.
Inflorescence
Cluster of 1-2 sessile spikes and 2-8 short spikes on ascending stalks 1 to 5 inches long; spikes oblong to egg-shaped, each with 5-18 spikelets; involucral bracts 3-6, strongly ascending, as long or much exceeding inflorescence.
Spikelet
Spikelets ascending, flattened, 8-18 flowered, 1.2 to 1 inch long; scales egg-shaped, firm, conspicuously nerved, pointed; stamens 3; style 3-cleft.
Fruit
Achene, ellipsoid, 3-sided, up to 1/10 inch long, brown or black.

Ecology

Habitat
Lowland prairies or sand hills; sandy soils.
Distribution
Throughout Kansas, but infrequently in southeast corner.

Practical Information

Forage Value
The Kiowa considered it good horse fodder.

Additional Notes

Comments

Named for Lewis David von Schweinitz, 1780-1834, the German-born Pennsylvania clergyman who discovered it.

Quick Facts
Plant Type
Sedge
Family
Cyperaceae - Sedge Family
Life Span
Perennial
Height
8-32 inches
Last Updated
2007-11-02
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: June, July, August, September