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Poa annua L.
annual bluegrass
Symbol: POAN
Group: Monocot
Family: Poaceae
Growth Habit: Graminoid
Duration: Annual
Biennial
U.S. Nativity: Introduced
Click on the image below to enlarge it and download a high-resolution JPEG file.
Click on this Photograph of Poa annua (annual bluegrass) to enlarge it and download a high-resolution JPEG file Robert H. Mohlenbrock. USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln, NE. Courtesy of USDA NRCS Wetland Science Institute. Usage Guidelines.

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Plant Synonyms:
POAN Poa annua L.
 

POANA

Poa annua L. var. aquatica Aschers.
 

POANR

Poa annua L. var. reptans Hausskn.
More Information
About annual bluegrass

Link to plant characteristics report for Poa annua

Link to plant Classification report for Poa annua

Plant source and reference for Poa annua

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

Poa annua L.

POAN

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

AR CA CT
FL* GA IL
KY ME MA
MI MO NH
NC RI SC
TN* VT VA
WV
* Offsite source.
Alabama
Alaska
Arizona
Arkansas
California
Colorado
Connecticut
Delaware
Florida
Georgia
Hawaii
Idaho
Illinois
Indiana
Iowa
Kansas
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Montana
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
North Carolina
North Dakota
Ohio
Oklahoma
Oregon
Pennsylvania
Puerto Rico
Rhode Island
South Carolina
South Dakota
Tennessee
Texas
Utah
Vermont
Virginia
Washington
West Virginia
Wisconsin
Wyoming

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Michigan distribution information New Hampshire distribution information West Virginia distribution information Arkansas distribution information Connecticut distribution information Maine distribution information Massachusetts distribution information North Carolina distribution information Illinois distribution information Virginia distribution information Kentucky distribution information California distribution information Missouri distribution information Vermont distribution information Tennessee distribution information linked offsite at Univerity of Tennessee Herbarium South Carolina distribution information Rhode Island distribution information Florida distribution information linked offsite at USF Atlas of Florida Vascular Plants Georgia distribution information
Related Taxa:
Poa annua L.

View 270 genera in Poaceae, 71 species in Poa

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Classification:
Poa annua 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 Poaceae – Grass family
                            Genus Poa L. – bluegrass
                               Species Poa annua L. – annual bluegrass

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Invasive Information:
Poa annua L.
        walkgrass
        annual bluegrass
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.
N'EAST   Uva, R.H., J.C. Neal, & J.M. DiTomaso. 1997. Weeds of the Northeast. Cornell University Press. Ithaca, New York.. 397pp.
 
NE&GP;   Stubbendieck, J., G.Y. Friisoe, & M.R. Bolick. 1994. Weeds of Nebraska and the Great Plains. Nebraska Department of Agriculture, Bureau of Plant Industry. Lincoln, Nebraska.. 589pp.
 
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:
Poa annua 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:
Poa annua 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-,OBL FACU FAC FAC- FACU FACU FAC FAC- FAC FAC- FACW- FAC OBL FACU-

Wetland Data InformationInterpreting wetland indicator status

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Other Species Accounts and Images:
Poa annua L.

View species account 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 41107.
View photographs from University of Tennessee Herbarium.
View species account or photographs from Wisconsin State Herbarium (UW-Madison).

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Related Web Sites:
Poa annua L.

    Arizona: abstract & image of walkgrass (Poa annua)
    British Columbia Ag. & Food, Crop Protection Program
    Rocky Mountain National Park Exotic Plant Species Assessment
    UC Davis, IPM: abstract & images
    WV-Identification of Common Grasses (line drawings of collar area)
    WeedScience.com: diagnostic images

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