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Bottle-brush sedge

Also known as: Porcupine sedge

Carex hystericina Muhl.

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Bottle-brush sedge
Bottle-brush sedge
Bottle-brush sedge
Bottle-brush sedge

Morphology

Culm
Erect, stout, triangular, light-green, rough above, bases purplish red.
Leaves
Elongate, firm, some overtopping inflorescence, to 1/3 inch wide, green, rough.
Sheath
White transparent.
Inflorescence
Spikes, unisexual; terminal spike staminate, 1/2 to 2 inches long, less than 1/6 inch thick, slender-stalked, often with leaf-like bract at base; staminate scales reddish brown with green centers, awned; lateral spikes 1-4, pistillate, densely flowered, oblong-cylindric, .75 to 2.5 inches long, to 3/5 inch thick, subtended by leaf-like bracts; upper pistillate spikes nearly sessile; lower pistillate spikes slender-stalked, somewhat drooping; pistillate scales usually shorter than perigynium, inconspicuous, reddish brown with green centers; awns long, minutely toothed; perigynia to 100 per spike, elongate egg-shaped, pale green, shiny, many-ribbed, tapered abruptly into long beaks with 2 rigid teeth.
Fruit
Achenes, triangular, brown, 1-seeded; stigmas 3, reddish brown.

Ecology

Habitat
Open wet sites, marshy areas, swamps, shorelines, and ditches.
Distribution
Principally north two thirds of Kansas.

Additional Notes

Comments

Carex comes from the Greek word keirein, "to cut", which probably alludes to the rough-margined leaves of members of the genus.

Quick Facts
Plant Type
Sedge
Family
Cyperaceae - Sedge Family
Life Span
Perennial
Height
8 to 40 inches
Last Updated
2007-10-05
Flowering Period
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Blooms: May, June