Northern Prairie Wildlife Research Center
Northeast Wetland Flora
Field Office Guide to Plant Species
Cyperus tenuifolius (Steud.) Dandy
- Family: Sedge (Cyperaceae)
- Flowering: July-October
- Field Marks: This species is readily distinguished by its sweet fragrance and its 1-flowered
- Habitat: Wet soil.
- Habit: Tufted annual with fibrous roots, strongly sweet-scented, particularly when crushed.
- Stems: Upright, unbranched, very slender, smooth, up to 1 foot tall.
- Leaves: Elongated, soft, flat, linear, up to 1/10 inch wide, with rough margins.
- Flowers: Borne in spikelets, the spikelets in a cluster of 2-3 sessile, rounded heads
sometimes giving the appearance of being lobed, up to 1/3 inch across, subtended by
1-5 (usually 3) leaf-like bracts; spikelets flattened, 1-flowered, 1/12-1/10 inch long; scales ovate,
pointed at the tip, keeled.
- Sepals: 0.
- Petals: 0.
- Stamens: 2.
- Pistils: Ovary superior; styles 2.
- Fruits: Achenes lenticular, ellipsoid, rounded at the tip, 1/12-1/10 inch long.
- Notes: Waterfowl eat the tiny achenes.
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