Pictorial guide to the flora of the British Isles

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Reynoutria sachalinensis (F. Schmidt) Nakai

giant knotweed (Polygonaceae)

 SpreadBias within British IslesDirection of bias
WidespreadNegligible tendencySE
Plant Atlas 2020
BSBI Distribution Map

Synonyms | Fallopia sachalinensis (F. Schmidt) Ronse Decr. | Polygonum sachalinense F. Schmidt

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All images copyright © Christopher J. Dixon unless otherwise indicated.

L-R: Bidens tripartita, Melilotus officinalis, Mimulus guttatus, Thalictrum flavum, Ranunculus peltatus, Anchusa arvensis, Malva alcea, Lolium perenne