Northern Prairie Wildlife Research Center
Prairie Wedgegrass (Sphenopholis obtusata)
- Family: Grass (Poaceae)
- Flowering: May-July.
- Field Marks: The genus Sphenopholis usually has 2-flowered spikelets. Sphenopholis obtusata differs from other members of the genus by its very slender inflorescence and round-tipped scales of the spikelet.
- Habitat: Moist woods; also in drier habitats.
- Habit: Perennial grass with slender rhizomes.
- Stems: Erect, smooth or hairy, up to 2 feet tall.
- Leaves: Elongated, narrow, rough to the touch or merely hairy, up to 1/4 inch wide.
- Flowers: Borne in spikelets; the spikelets 2-flowered, up to 1/8 inch long, arranged in a very narrow panicle up to 6 inches long.
- Sepals: 0.
- Petals: 0.
- Stamens: 3.
- Pistils: Ovary superior.
- Grains: Narrowly ellipsoid, yellowish, shiny, about 1/10 inch long.
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