It is a species of flowering plant in the knotweed family known by several common names.
Persicaria amphibia is native to a large area across the northern hemisphere, including Europe, Asia, North America, and parts of Africa. It has been introduced elsewhere, such as South America and other parts of Africa. It grows in many types of wet habitat, such as ponds, streams, and marshes. It is a rhizomatous perennial herb which takes a variety of forms and is quite variable in morphology
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