GREAT PLAINS FLAT-SEDGE
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| File Size: 26 KB |
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Cyperus lupulinus (Spreng. ) Marcks
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| [=Cyperus filiculmis Vahl] |
| Saline County, Kansas |
| Perennial |
| Height: 4-28 inches |
| Family: Cyperaceae - Sedge Family |
| Flowering Period: May, June, July, August, September,October |
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| Culms: | | Slender, wiry, 3-sided, glabrous. | | Leaves: | | Blades folded together lengthwise or flat, 2 to 18 inches long, 1/25 to 1/7 inch wide, shorter than culm, margins rough, sometimes unrolled. | | Inflorescences: | | Single head-like spike, sessile, dense, hemispherical to nearly spherical, 2/5 to 1 inch diam., rarely with 1 or 2 additional rays; subtending involucral bracts 2-4, spreading or deflexed | | Spikelets: | | 10-70, linear to narrowly elliptic, 1/8 to 4/5 inch long, radiate, densely congested, bases overlapping, tips pointed, 3-25-flowered; scales straw-colored to light brown or nearly white, midrib green, 7-13-nerved, nerves conspicuous, oblong, 1/12 to 1/7 inch long, midrib extending past body of scale as short point; stamens 3; style 3-cleft. | | Fruits: | | Achene, dark brown or black, narrowly oblong, .09 to .09 inch, sharply 3-angled, shiny. | | Habitat: | | Well-drained, open roadsides, fields, and prairies. | | Distribution: | | Statewide | | Origin: | | Native | | Comments: | | Tufted. From tuberous-thickened rhizomes. |
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| Great Plains flat-sedge spikelets |  | | 23 KB | | Saline County, Kansas |
| | Great Plains flat-sedge |  | | 21 KB | | Saline County, Kansas |
| | Great Plains flat-sedge inflorescence |  | | 28 KB | | Saline County, Kansas |
| | Great Plains flat-sedge inflorescence |  | | 128 KB | | Konza Prairie, Riley County, Kansas |
| | Great Plains flat-sedge |  | | 95 KB | | Ottawa County, Kansas |
| | Great Plains flat-sedge |  | | 161 KB | | Ottawa County, Kansas |
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