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Cyperus rotundus L.
nutgrass
Symbol: CYRO
Group: Monocot
Family: Cyperaceae
Growth Habit: Graminoid
Duration: Perennial
U.S. Nativity: Introduced
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Click on this Photograph of Cyperus rotundus (nutgrass) to enlarge it and download a high-resolution JPEG file ©Larry Allain. USGS NWRC. Usage Guidelines.

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Classification Distribution Images Invasive Links More Info Noxious Related Taxa Synonyms Wetland
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More Information
About nutgrass

Link to plant Classification report for Cyperus rotundus

Plant guide - PDF or DOC format Plant guide for Cyperus rotundus in Word formatPlant guide for Cyperus rotundus in PDF format

Plant source and reference for Cyperus rotundus

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State Distributional Map for CYRO
© Image generated using gd 1.8
Plant Distribution by State

Cyperus rotundus L.

CYRO

See county distributions for the following states by clicking on them below or on the map.

AR CA FL*
GA KY MO
NC SC TN*
VA
* Offsite source.
Alabama
Arizona
Arkansas
California
Delaware
Florida
Georgia
Hawaii
Kentucky
Louisiana
Maryland
Minnesota
Mississippi
Missouri
New Jersey
New York
North Carolina
Oklahoma
Pennsylvania
Puerto Rico
South Carolina
Tennessee
Texas
Virgin Islands
Virginia

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North Carolina distribution information Virginia distribution information California distribution information Kentucky distribution information Missouri distribution information Tennessee distribution information linked offsite at Univerity of Tennessee Herbarium Arkansas distribution information South Carolina distribution information Georgia distribution information Florida distribution information linked offsite at USF Atlas of Florida Vascular Plants
Related Taxa:
Cyperus rotundus L.

View 35 genera in Cyperaceae, 125 species in Cyperus

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Classification:
Cyperus rotundus L.

Click on a scientific name below to expand it in the PLANTS Classification Report.
   
    Kingdom Plantae – Plants
       Subkingdom Tracheobionta – Vascular plants
          Superdivision Spermatophyta – Seed plants
             Division Magnoliophyta – Flowering plants
                Class Liliopsida – Monocotyledons
                   Subclass Commelinidae –
                      Order Cyperales –
                         Family Cyperaceae – Sedge family
                            Genus Cyperus L. – flatsedge
                               Species Cyperus rotundus L. – nutgrass

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Noxious Weed Information:
Cyperus rotundus L.
This plant is listed by the U. S. federal government or a state. Common names are from state and federal lists. Click on a place name to get a complete noxious weed list for that location.
Arkansas:
        nut grass     Noxious weed
California:
        purple nutsedge     B list (noxious weeds)
Oregon:
        purple nutsedge     "A" designated weed
        purple nutsedge     Quarantine
Washington:
        purple nutsedge     Quarantine

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Invasive Information:
Cyperus rotundus L.
        purple nutsedge
        nutgrass
        kili'o'opu
        cocograss
        chaguan humatag
        pakopako
This plant is considered invasive by the authoritative sources noted below. This plant may be known by one or more common names in different places, and some are listed above. Click on an acronym to view each invasive plant list, or click here for a composite list of Invasive Plants of the U.S.
STATE   Assorted authors. 200_. State Noxious Weed Lists for 45 States. State agriculture or natural resource departments.
 
SWSS   Southern Weed Science Society. 1998. Weeds of the United States and Canada. CD-ROM. Southern Weed Science Society. Champaign, Illinois..
 
WSWS   Whitson, T.D. (Ed.) et al.. 1996. Weeds of the West. Western Society of Weed Science in cooperation with Cooperative Extension Services, University of Wyoming. Laramie, Wyoming.. 630pp.
 

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Introduced Information:
Cyperus rotundus L.
This plant is introduced to the United States from another country or countries. Click on link below for a partial or complete list of U.S. introduced plants.

List of Invasive PlantsScientific Name = A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T| U| V| W| X| Y| Z| all
List of Invasive PlantsCommon Name = A| B| C| D| E| F| G| H| I| J| K| L| M| N| O| P| Q| R| S| T| U| V| W| X| Y| Z| all
Note: The complete introduced plant report is 1.4 MB. Download and display times may take 3 to 12 minutes depending on your internet connection, internet traffic, your computer and browser. It may appear your computer has locked up. Task manager may report that Netscape is 'Not Responding'. Typically, Netscape is formatting the report for display, and if you are patient, the final report will appear.

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Wetland Indicator Status:
Cyperus rotundus L.
Nat. Ind. Reg. 1 Reg. 2 Reg. 3 Reg. 4 Reg. 5 Reg. 6 Reg. 7 Reg. 8 Reg. 9 Reg. 0 Reg. A Reg. C Reg. H
FACU,FAC FAC FAC- FAC- NO NO FAC FAC NO NO FAC NO FAC FACU

Wetland Data InformationInterpreting wetland indicator status

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Other Species Accounts and Images:
Cyperus rotundus L.

View species account or photographs from USF Atlas of Florida Vascular Plants.
View species account from ARS Germplasm Resources Information Network (GRIN).
View taxonomic account from Integrated Taxonomic Information System (ITIS) for ITIS Taxonomic Serial Number 39900.
View photographs from University of Tennessee Herbarium.

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Related Web Sites:
Cyperus rotundus L.

    Hawaiian Ecosystems at Risk: Plant Threats to Pacific Ecosystems
    University of Hawaii Botany Department: Alien Plants of Hawaii

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