Northern Prairie Wildlife Research Center
Strawcolored Nutsedge (Cyperus strigosus)
- Family: Sedge (Cyperaceae)
- Flowering: July-October.
- Field Marks: This sedge is distinguished by its slender-pointed, straw-colored spikelets with pointed scales.
- Habitat: Moist fallow fields, wet prairies, along streams, around ponds and lakes.
- Habit: Usually stout perennial with short, thick rhizomes.
- Stems: Erect, smooth, triangular, up to 3 feet tall.
- Leaves: Long, narrow, somewhat rough along the edges, up to 1/3 inch broad.
- Flowers: One per scale, with many scales per spikelet, each spikelet narrowed to a slender point, straw-colored, up to 1 inch long, the entire cluster of spikelets subtended by 3-8 leaflike bracts.
- Scales: Broadly lanceolate, pointed at the tip, yellow to straw-colored, 1/8-1/4 inch long.
- Sepals: 0.
- Petals: 0.
- Stamens: 3.
- Pistils: 1; styles 3; ovary superior.
- Fruits: Achenes narrowly oblong, 3-angled, reddish, 1/20-1/10 inch long.
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