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Tauscher, Joseph Allan

Cyperus polystachyos

Cyperus polystachyos Rottb.

Manyspike Flatsedge, Bunchy Sedge

Cyperaceae (Sedge Family)

Synonym(s):

USDA Symbol: CYPO

USDA Native Status: L48 (N), HI (N), PR (N), VI (N)

From the Image Gallery

1 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Grass/Grass-like
Root Type: Fibrous
Leaf Arrangement: Alternate
Leaf Complexity: Simple
Leaf Shape: Linear
Leaf Venation: Parallel
Breeding System: Flowers Unisexual , Flowers Bisexual
Fruit Type: Achene
Size Notes: Up to about 28 inches tall, often shorter.
Flower: Stamens 2
Fruit: Light to dark brown, summer to early fall.

Bloom Information

Bloom Color: Yellow , Brown
Bloom Time: Apr , May , Jun , Jul
Bloom Notes: A single dense cluster of linear-ovate spikelets, light brown, greenish yellow. Fruit (achenes) are produced in the summer through early fall.

Distribution

USA: AL , AR , DE , FL , GA , HI , KY , LA , MA , MD , ME , MO , MS , NC , NJ , NY , OK , PA , SC , TN , TX , VA , WV
Native Distribution: Texas, southeastern US and eastern seaboard to Maine.
Native Habitat: Shores, ditches, swales between dunes.

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:	FACW			FACW	FACW	FACW	FACW	FACW	FACW

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Bibliography

Bibref 293 - Manual of the Vascular Plants of Texas (1979) Correll, D. S. & M. C. Johnston

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Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Cyperus polystachyos in USDA Plants
FNA: Find Cyperus polystachyos in the Flora of North America (if available)
Google: Search Google for Cyperus polystachyos

Metadata

Record Modified: 2023-01-04
Research By: Joseph A. Marcus

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