Summary
Place of publication:
Sp. pl. 2:991. 1753
Verified:
02/04/2003
ARS Systematic Botanists.
Autonyms (not in current use), synonyms and invalid designations
Reference(s)
- Aldén, B., S. Ryman & M. Hjertson. Våra kulturväxters namn - ursprung och användning. Formas, Stockholm (Handbook on Swedish cultivated and utility plants, their names and origin). 2009
- Botanical Society of the British Isles. BSBI taxon database (on-line resource).
- Brown, R. G. & M. L. Brown. Herbaceous plants of Maryland. 1984
- Browne, E. T. & R. Athey. Vascular plants of Kentucky: an annotated checklist. 1992
- CIBA-GEIGY, Basel, Switzerland. The CIBA-GEIGY Weed Tables. 1974
- Correll, D. S. & M. C. Johnston. Manual of the vascular plants of Texas. 1970
- Costea, M. et al. 2004. The biology of Canadian weeds. 130. Amaranthus retroflexus L., A. powellii S. Watson and A. hybridus L. Canad. J. Pl. Sci. 84:631-668.
- Duncan, W. H. & J. T. Kartesz. Vascular flora of Georgia: an annotated checklist. 1981
- El-Hadidi, M. N. & M. S. Abdallah. Flora of Egypt. 1980-
- Erhardt, W. et al. Der große Zander: Enzyklopädie der Pflanzennamen. 2008
- Feuillet, C. 1998. pers. comm.
- FNA Editorial Committee. Flora of North America. 1993-
- Foster, S. & J. A. Duke. A field guide to medicinal plants: Eastern/Central North America, 2nd ed. 2000
- Gleason, H. A. & A. Cronquist. Manual of vascular plants of northeastern United States and adjacent Canada, ed. 2. 1991
- Groth, D. 2005. pers. comm.
- Holm, L. et al. A geographical atlas of world weeds. 1979
- Integrated Botanical Information System (IBIS). Australian plant common name database (on-line resource).
- Kingsbury, J. M. Poisonous plants of the United States and Canada. 1964
- Liberty Hyde Bailey Hortorium. Hortus third. 1976
- Magee, D. W. & H. E. Ahles. Flora of the Northeast. A manual of the vascular flora of New England and adjacent New York. 1999
- McGregor, R. L. et al. (The Great Plains Flora Association). Flora of the Great Plains. 1986
- Mitich, L. W. 1997. Redroot pigweed (Amaranthus retroflexus). Weed Technol. 11:199-202.
- Moerman, D. Native American ethnobotany, ed. 5. 1998
- Munro, D. B. Canadian poisonous plants information system (on-line resource).
- Ohwi, J. Flora of Japan (Engl. ed.). 1965
- Porcher, M. H. et al. Searchable World Wide Web Multilingual Multiscript Plant Name Database (MMPND) (on-line resource).
- Radford, A. E. et al. Manual of the vascular flora of the Carolinas. 1964
- Rehm, S. Multilingual dictionary of agronomic plants. 1994
- Sauer, J. D. 1967. The grain amaranths and their relatives: a revised taxonomic and geographic survey. Ann. Missouri Bot. Gard. 54:107.
- Tutin, T. G. et al., eds. Flora europaea, second edition. 1993
- Whitson, T. D. et al., eds. Weeds of the West, ed. 5. 1999
- Wu Zheng-yi & P. H. Raven et al., eds. Flora of China (English edition). 1994-
Common names
English
American pigweed – carelessweed – common amaranth – pigweed redroot – redroot – redroot amaranth – redroot pigweed – reflexed amaranth – rough pigweed – wild-beet amaranth – French
amarante réfléchie – German
Ackerfuchsschwanz – zurückgekrümmter Fuchsschwanz – Portuguese (Brazil)
carurú-áspero – Spanish
amaranto común – Swedish
svinamarant – Transcribed Chinese
fan zhi xian –
Distribution
| order_code | Status | Continent | Subcontinent | Country | State | Note |
| 1 | Native | Northern America | Eastern Canada | Canada | New Brunswick | |
| 1 | Native | Northern America | Eastern Canada | Canada | Nova Scotia | |
| 1 | Native | Northern America | Eastern Canada | Canada | Ontario | |
| 1 | Native | Northern America | Eastern Canada | Canada | Prince Edward Island | |
| 1 | Native | Northern America | Eastern Canada | Canada | Quebec | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Illinois | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Iowa | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Kansas | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Minnesota | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Missouri | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Nebraska | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | North Dakota | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Oklahoma | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | South Dakota | |
| 1 | Native | Northern America | North-Central U.S.A. | United States | Wisconsin | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Connecticut | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Indiana | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Maine | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Massachusetts | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Michigan | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Hampshire | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New Jersey | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | New York | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Ohio | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Pennsylvania | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Rhode Island | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | Vermont | |
| 1 | Native | Northern America | Northeastern U.S.A. | United States | West Virginia | |
| 1 | Native | Northern America | Northern Mexico | Mexico | Coahuila | |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Montana | |
| 1 | Native | Northern America | Northwestern U.S.A. | United States | Wyoming | |
| 1 | Native | Northern America | South-Central U.S.A. | United States | New Mexico | |
| 1 | Native | Northern America | South-Central U.S.A. | United States | Texas | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Alabama | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Arkansas | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Delaware | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | District of Columbia | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Florida | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Georgia | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Kentucky | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Louisiana | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Maryland | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Mississippi | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | North Carolina | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | South Carolina | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Tennessee | |
| 1 | Native | Northern America | Southeastern U.S.A. | United States | Virginia | |
| 1 | Native | Northern America | Western Canada | Canada | Alberta | |
| 1 | Native | Northern America | Western Canada | Canada | Manitoba | |
| 1 | Native | Northern America | Western Canada | Canada | Saskatchewan | |
| 4 | Naturalized | | | | | |
Native
Northern America
-
EASTERN CANADA:
Canada [New Brunswick, Nova Scotia, Ontario, Prince Edward Island, Quebec]
-
NORTH-CENTRAL U.S.A.:
United States [Illinois, Iowa, Kansas, Minnesota, Missouri, Nebraska, North Dakota, Oklahoma, South Dakota, Wisconsin]
-
NORTHEASTERN U.S.A.:
United States [Connecticut, Indiana, Maine, Massachusetts, Michigan, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Vermont, West Virginia]
-
NORTHERN MEXICO:
Mexico [Coahuila]
-
NORTHWESTERN U.S.A.:
United States [Montana, Wyoming]
-
SOUTH-CENTRAL U.S.A.:
United States [New Mexico, Texas]
-
SOUTHEASTERN U.S.A.:
United States [Alabama, Arkansas, Delaware, District of Columbia, Florida, Georgia, Kentucky, Louisiana, Maryland, Mississippi, North Carolina, South Carolina, Tennessee, Virginia]
-
WESTERN CANADA:
Canada [Alberta, Manitoba, Saskatchewan]
Naturalized
()
Economic Uses
| Usage | Type | Note | Reference |
| Vertebrate poisons | mammals | | Kingsbury, J. M. Poisonous plants of the United States and Canada. 1964 |
| Weed | potential seed contaminant | | CIBA-GEIGY, Basel, Switzerland. The CIBA-GEIGY Weed Tables. 1974 |
Cite as: USDA, Agricultural Research Service, National Plant Germplasm System.
2025. Germplasm Resources Information Network
(GRIN Taxonomy). National Germplasm Resources Laboratory, Beltsville, Maryland.
URL: https://ausgenebank.agriculture.vic.gov.au/gringlobal/taxon/taxonomydetail?id=2803.
Accessed 16 December 2025.