Amaranthus retroflexus L., Sp. Pl.: 991 (1753) (syn: Amaranthus bulgaricus Kov. ; Amaranthus bullatus Besser ex Spreng. ; Amaranthus chlorostachys Willk. ; Amaranthus curvifolius Spreng. ; Amaranthus delilei Richt. & Loret ; Amaranthus dubius E.H.L.Krause ; Amaranthus johnstonii Kov. ; Amaranthus patulus subsp. delilei (Richt. & Loret) Nyman ; Amaranthus recurvatus Desf. ; Amaranthus retroflexus subsp. delilei (Richt. & Loret) Tzvelev ; Amaranthus retroflexus var. delilei (Richt. & Loret) Thell. ; Amaranthus retroflexus var. genuinus Thell. ex Probst; Amaranthus retroflexus var. major Moq. ; Amaranthus retroflexus var. rubricaulis Thell. ; Amaranthus retroflexus f. rubricaulis Thell. ex Probst ; Amaranthus retroflexus var. salicifolius I.M.Johnst. ; Amaranthus rigidus Schult. ex Steud. ; Amaranthus spicatus Lam. ; Amaranthus strictus Ten. ; Amaranthus texidoris Sennen & Gonzalo ; Amaranthus tremolsii Sennen ; Amaranthus × wilczekii Sennen & Gonzalo ; Galliaria retroflexa (L.) Nieuwl.; Galliaria scabra Bubani; Pyxidium retroflexum (L.) Montandon);
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Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Southeast, Mexico Southwest; Introduced into: Afghanistan, Alabama, Albania, Alberta, Algeria, Altay, Amur, Argentina Northeast, Argentina South, Arizona, Arkansas, Austria, Azores, Baleares, Baltic States, Belarus, Belgium, Bolivia, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, British Columbia, Bulgaria, Burkina, California, Cambodia, Canary Is., Central European Russia, Chad, Chile Central, Chile North, China North-Central, China Southeast, Colorado, Connecticut, Corse, Cyprus, Czechia-Slovakia, Delaware, Denmark, District of Columbia, East Aegean Is., East European Russia, Egypt, Finland, Florida, France, Georgia, Germany, Great Britain, Greece, Gulf States, Hungary, Idaho, Illinois, India, Indiana, Inner Mongolia, Iran, Iraq, Ireland, Irkutsk, Italy, Japan, Kansas, Kazakhstan, Kentucky, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, KwaZulu-Natal, Lebanon-Syria, Libya, Louisiana, Madeira, Magadan, Maine, Manchuria, Manitoba, Maryland, Massachusetts, Mauritania, Mexico Northwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Nansei-shoto, Nebraska, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New South Wales, New York, New Zealand North, New Zealand South, Newfoundland, North Carolina, North Caucasus, North Dakota, Northwest European Russia, Northwest Territories, Norway, Nova Scotia, Nunavut, NW. Balkan Pen., Ohio, Oklahoma, Ontario, Oregon, Pakistan, Palestine, Paraguay, Pennsylvania, Poland, Portugal, Primorye, Prince Edward I., Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Sicilia, Sinai, South Australia, South Carolina, South Dakota, South European Russia, Spain, Sweden, Switzerland, Tadzhikistan, Tennessee, Texas, Transcaucasus, Trinidad-Tobago, Tunisia, Turkmenistan, Tuva, Türkiye, Türkiye-in-Europe, Ukraine, Uruguay, Utah, Uzbekistan, Venezuela, Vermont, Victoria, Vietnam, Virginia, Washington, West Himalaya, West Siberia, West Virginia, Western Australia, Wisconsin, Wyoming, Xinjiang, Yakutiya, Zambia, Zimbabwe as per POWO;
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Common name: Redroot Pigweed, red-root amaranth, red-rooted pigweed, common amaranth, pigweed amaranth, common tumbleweed
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Amaranthus retroflexus L.: 5 very high res. images.
Altitude: 1400 m.
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References:
POWO WFO Flora of China FOC illustration Flora of Pakistan Flowers of India Wikipedia iNaturalist