
"Persicaria amphibia" is a species of flowering plant in the knotweed family known by several common names, including longroot smartweed, water knotweed, water smartweed, and amphibious bistort. It is native to much of North America, Asia, Europe, and parts of Africa, and it is known elsewhere as an introduced species and sometimes a noxious weed.
Similar species: Pinks, Cactuses, And Allies
By Greg Shchepanek
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Uploaded Apr 26, 2020. Captured Jul 14, 2012 13:57 in 136-150 Chemin d'Eardley, Sainte-Cécile-de-Masham, QC J0X 2W0, Canada.