Persicaria amphibia (L.) S. F. Gray, Fl. Auvergne ed. 2: 519 1800. (syn: Chulusium amphibium (L.) Raf.; Chulusium fluitans Raf.; Persicaria amphibia var. amurensis (Korsh.) H. Hara; Persicaria amphibia var. natans (Leyss.) A. H. Munshi & G. N. Javeid; Persicaria amphibia var. terrestris (Leyss.) A. H. Munshi & G. N. Javeid; Persicaria amurensis Nieuwl.; Persicaria fluitans Montandon; Polygonum amphibia subsp. amurensis (Korsh.) Sojak; Polygonum amphibium L.; Polygonum amphibium subsp. amurense (Korsh.) Hult.; Polygonum amphibium var. amurense Korsh.; Polygonum amphibium var. terrestre Willd.; Polygonum amphibium f. terrestris (Leers) Kitag.; Polygonum amphibium var. vestitum Hemsl.; Polygonum amurense (Korsh.) Worosch.; Polygonum aquaticum A. Gray ex Meisn.; Polygonum bistorta Walt.; Polygonum coccineum var. terrestre (Willd.) Willd.; Polygonum natans Gueldenst.; Polygonum purpureum Gilib.; Polygonum salicifolium Schur; Polygonum terrestre (Willd.) Hegetschw.);
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Subarctic & Temp. Northern Hemisphere, Ethiopia to Kenya, S. Africa: Afghanistan, Alabama, Alaska, Albania, Alberta, Algeria, Altay, Amur, Arizona, Arkansas, Austria, Baltic States, Belarus, Belgium, British Columbia, Bulgaria, Buryatiya, California, Cape Provinces, Central European Rus, China North-Central, China South-Central, China Southeast, Chita, Colorado, Connecticut, Corse, Czechoslovakia, Delaware, Denmark, District of Columbia, East European Russia, East Himalaya, Ethiopia, Finland, France, Free State, Føroyar, Germany, Great Britain, Greece, Hungary, Iceland, Idaho, Illinois, Indiana, Inner Mongolia, Iowa, Iran, Iraq, Ireland, Irkutsk, Italy, Kamchatka, Kansas, Kazakhstan, Kentucky, Kenya, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Krym, Kuril Is., KwaZulu-Natal, Labrador, Lesotho, Louisiana, Magadan, Maine, Manchuria, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Mongolia, Montana, Morocco, Nebraska, Nepal, Netherlands, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, North European Russi, Northern Provinces, Northwest European R, Northwest Territorie, Norway, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pakistan, Pennsylvania, Poland, Portugal, Primorye, Prince Edward I., Qinghai, Québec, Rhode I., Romania, Sakhalin, Sardegna, Saskatchewan, Saudi Arabia, Sicilia, South Carolina, South Dakota, South European Russi, Spain, Sweden, Switzerland, Tadzhikistan, Tennessee, Texas, Tibet, Transcaucasus, Tunisia, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Utah, Uzbekistan, Vermont, Virginia, West Himalaya, West Siberia, West Virginia, Wisconsin, Wyoming, Xinjiang, Yakutskiya, Yemen, Yugoslavia, Yukon as per POWO;
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Persicaria amphibia from Canada-GS16022021-1
2 images.
Persicaria amphibia (L.) Gray
Syn: Polygonum amphibium L.
Common name: Water smartweed
Rhizomatous perennial herb of aquatic habitats with long petioles, leaves variously shaped, often floating in ponds and lakes; flowers pink in terminal spikes.
Photographed from Rattray Marsh, Mississauga, Canada, 23-8-2019.
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References: POWO Catalogue of Life The Plant List Ver.1.1
https://www.illinoiswildflowers.info/wetland/plants/wt_smartweed.html
https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=69778
https://gobotany.nativeplanttrust.org/species/persicaria/amphibia/
