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Agricultural Research Service, Beltsville Area

Germplasm Resources Information Network (GRIN)

  GRIN Taxonomy for Plants
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Taxon: Poa annua L.

Genus: Poa
Family: Poaceae (alt. Gramineae) subfamily: Pooideae tribe: Poeae subtribe: Poinae
Nomen number: 28904
Place of publication: Sp. pl. 1:68. 1753
Typification: View record from Linnaean Plant Name Typification Project of the Natural History Museum of London.
Name verified on: 13-May-1992 by ARS Systematic Botanists. Last updated: 09-May-2011
Species priority site is: Western Regional PI Station (W6).
Accessions: 80 in National Plant Germplasm System.
  • all available ) NPGS accessions. or .
  • all available ) NPGS accessions by country.
  • Check PlantSearch database of Botanic Gardens Conservation International for possible non-NPGS germplasm.

A declared aquatic or terrestrial noxious weed and/or noxious-weed seed in these U.S. states (see state noxious weed lists), with links to state information or web documents:
AK°, CT°, DC°, DE°, FL°, KY°, MA°, MD°, NH°, NJ°, NY(in lawn seed)°, PA°, SD°, TN°, TX°, VA°, WV°.
ªAquatic. *Terrestrial. °In seed.
noxious weed information from Invaders Database System for northwestern U.S.

See also subordinate taxa:

Common names:

  • annual bluegrass   (Source: World Econ Pl ) – English
  • annual meadow grass   (Source: World Econ Pl ) – English
  • annual poa   (Source: Aust Pl Common Names ) – English
  • creeping bluegrass   (Source: Diversity 16:13.2000 [as P. annua var. reptans]) – English   [Poa annua forma reptans]
  • winter grass   (Source: Aust Pl Common Names ) – English
  • zao shu he   (Source: F ChinaEng ) – Transcribed Chinese
  • pâturin annuel   (Source: Dict Rehm ) – French
  • einjähriges Rispengras   (Source: Dict Rehm ) – German
  • poa annua   (Source: Mult Glossary Crops ) – Italian
  • suzume-no-katabira   (Source: F JapanOhwi ) – Japanese Rōmaji
  • saepoapul   (Source: F Korea ) – Transcribed Korean
  • mjatlik odnoletnij   (Source: Mansf Ency ) – Transliterated Russian
  • espiguilla   (Source: Dict Rehm ) – Spanish
  • hierba de punta   (Source: Dict Rehm ) – Spanish
  • vitgröe   (Source: Vara kulturvaxt namn ) – Swedish

Economic importance:

  • Harmful organism host: crop diseases   (fide WorldWeeds 593-594. 1997)
  • Harmful organism host: crop pests   (fide WorldWeeds 593-594. 1997)
  • Environmental: lawn/turf   (fide Diversity 16:29-30. 2000)
  • Weed: potential seed contaminant   (fide Weed CIBA)

Distributional range:

      Naturalized: (links to other web resources are provided for some distributions)
    Southern Africa: Lesotho; Namibia; South Africa
    Antarctic Continent: Antarctica
    Australia: Australia
    United States
    North-Central Pacific: United States - Hawaii
    Caribbean: West Indies
    Western South America: Colombia; Peru
    Southern South America: Chile

    Southern South America: Argentina; Paraguay; Uruguay

  • also cultivated

  • probable origin Europe




Check other web resources for Poa annua L.:


  • Florets: U.S. National Seed Herbarium image
  • Florets: Seed ID Workshop image, from Department of Horticulture and Crop Science, Ohio State University
  • Check for additional images
  • Google Images Images Note: Be advised that their identity may be inaccurate. Proper identification of a plant may require specialized taxonomic knowledge or comparison with properly documented herbarium material.

Abbreviations & symbols in GRIN Taxonomy

| USDA | ARS | GRIN | NPGS | New Search |

Cite as:
USDA, ARS, National Genetic Resources Program.
Germplasm Resources Information Network - (GRIN) [Online Database].
National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: (28 August 2015)

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