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Cyperus odoratus  L.
Greenwood County, Kansas
Height: 4-32 inches
Family: Cyperaceae - Sedge Family
Flowering Period:   August, September,October
Also Called: Slender nutsedge, fragrant flatsedge.
Culms: Erect, stout, glabrous, prominently 3-angled.
Leaves: Narrow, elongated, shorter than culm, 1/10 to 2/5 inch wide, glabrous.
Inflorescences: Spikes, simple or compound, loose, elongate; stalks 3-10, unequal, 2 to 4 inches long; bracts several, long, leaf-like, mostly surpassing inflorescence.
Spikelets: Spikelets, numerous, linear-cylindric, spreading, up to 1.25 inch long, 4-30 flowered, easily break into sections, reddish to brownish color at maturity; scales ovate, up to 1/10 inch long, tip pointed or blunt, overlapping base of scale above.
Fruits: Achenes, 3-angled, oblong, less than 1/12 inch, brown.
Habitat: Marsh areas and moist margins of streams, ponds and rivers; wet sand or mud.
Distribution: Throughout Kansas.
Comments: Rusty flat-sedge is abundant in Kansas. This species can be quite variable in appearance.

Rusty flat-sedge
156 KB
Greenwood County, Kansas