Amaranthus retroflexus L.
redroot amaranth
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Click on the image below 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. Courtesy of USDA NRCS Wetland Science Institute. Usage Requirements.
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Images:
Amaranthus retroflexus L.
Click on a thumbnail to view an image, or
see all the Amaranthus thumbnails at the PLANTS Gallery
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Synonyms:
Amaranthus retroflexus L.
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AMRES |
Amaranthus retroflexus L. var. salicifolius I.M. Johnst. |
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Distribution:
Amaranthus retroflexus L.
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See U.S. county distributions (when available) by clicking on the map or the linked states below:
USA (AK, AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, HI, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY), CAN (AB, BC, MB, NB, NF, NS, NT, ON, PE, QC, SK), FRA (SPM) |
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Related Taxa:
Amaranthus retroflexus L.
View
23 genera in Amaranthaceae,
45 species in Amaranthus
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Classification:
Amaranthus retroflexus L.
Click on a scientific name below to expand it in the PLANTS
Classification Report.
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U.S. Weed Information:
Amaranthus retroflexus L.
careless weed
redroot pigweed
rough pigweed
This plant can be weedy or invasive according to 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 weed list, or click here for a
composite list of Weeds of the U.S.
| N'EAST |
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Uva, R.H., J.C. Neal, & J.M. DiTomaso.
1997.
Weeds of the Northeast.
Cornell University Press.
Ithaca, New York.
397pp.
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| NE&GP |
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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.
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| SWSS |
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Southern Weed Science Society.
1998.
Weeds of the United States and Canada. CD-ROM.
Southern Weed Science Society.
Champaign, Illinois.
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| WSWS |
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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:
Amaranthus retroflexus L.
This plant is introduced to some part of the PLANTS
Floristic Area, though it may be native in other parts. Click on
link below for a partial or complete list of PFA introduced plants.
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Wetland Indicator Status:
Amaranthus retroflexus 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- |
FACU |
FAC- |
FACU+ |
FACU |
FACU |
FACU- |
NI |
FACU |
FACU+ |
FACU |
NI |
NO |
NO |
Interpreting Wetland Indicator Status
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More Accounts and Images:
Amaranthus retroflexus L.
View photographs from CalPhotos.
View species account from USDA Forest Service Fire Effects Information System (FEIS).
View species account and distribution map from Flora of North America (FNA).
View species account, photographs, and distribution 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 20745.
View species account and distribution map from Jepson Interchange (University of California - Berkeley).
View species account from Native American Ethnobotany (University of Michigan - Dearborn).
View photographs and distribution from University of Tennessee Herbarium.
View photographs and distribution from University of Washington Burke Museum.
View species account and photographs from University of Wisconsin - Stevens Point Freckmann Herbarium.
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Related Web Sites:
Amaranthus retroflexus L.
British Columbia Ag. & Food, Crop Protection Program
Manitoba Agriculture - Weeds in Crop Production: abstract & images
Poisonous Plants of the Southern United States
UC Davis, IPM: abstract & images
Virginia Tech: abstract & image
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