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Agricultural Research Service, Beltsville Area

Germplasm Resources Information Network (GRIN)

  GRIN Taxonomy for Plants
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Taxon: Amaranthus retroflexus L.

Genus: Amaranthus subgenus: Amaranthus
Family: Amaranthaceae
Nomen number: 2803
Place of publication: Sp. pl. 2:991. 1753
Typification: View record from Linnaean Plant Name Typification Project of the Natural History Museum of London.
Name verified on: 04-Feb-2003 by ARS Systematic Botanists. Last updated: 04-Feb-2003
Species priority site is: North Central Regional PI Station (NC7).
Accessions: 24 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.

Common names:

  • American pigweed   (Source: Aust Pl Common Names ) – English
  • carelessweed   (Source: Aust Pl Common Names ) – English
  • common amaranth   (Source: BSBI ) – English
  • pigweed redroot   (Source: Aust Pl Common Names ) – English
  • redroot   (Source: World Econ Pl ) – English
  • redroot amaranth   (Source: F NAmer ) – English
  • redroot pigweed   (Source: World Econ Pl ) – English
  • reflexed amaranth   (Source: Aust Pl Common Names ) – English
  • rough pigweed   (Source: World Econ Pl ) – English
  • wild-beet amaranth   (Source: F NAmer ) – English
  • fan zhi xian   (Source: F ChinaEng ) – Transcribed Chinese
  • amarante réfléchie   (Source: C. Feuillet, p.c.) – French
  • Ackerfuchsschwanz   (Source: Dict Rehm ) – German
  • zurückgekrümmter Fuchsschwanz   (Source: Zander Ency ) – German
  • carurú-áspero   (Source: D. Groth, p.c. 2005) – Portuguese (Brazil)
  • amaranto común   (Source: Dict Rehm ) – Spanish
  • svinamarant   (Source: Vara kulturvaxt namn ) – Swedish

Economic importance:

  • Vertebrate poisons: mammals   (fide Kingsbury)
  • Weed: potential seed contaminant   (fide Geigy Weed Tables. 1968)

Distributional range:

      Native: (links to other web resources are provided for some distributions)
  • NORTHERN AMERICA (Check conservation status in U.S. & Canada in NatureServe Explorer database)
    Eastern Canada: Canada - New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec
    Western Canada: Canada - Alberta, Manitoba, Saskatchewan
    Northeastern U.S.A.: United States - Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia
    North-Central U.S.A.: United States - Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin
    Northwestern U.S.A.: United States - Montana, Wyoming
    Southeastern U.S.A.: United States - Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia
    South-Central U.S.A.: United States - New Mexico, Texas
    Northern Mexico: Mexico - Coahuila

  • naturalized nearly worldwide



Check other web resources for Amaranthus retroflexus L.:


  • 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: (13 October 2015)

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