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Image of Japanese Knotweed
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Japanese Knotweed

Reynoutria japonica Houtt.

JC Schou   cc-by-nc

Reynoutria japonica (Japanese Knotweed) is a species of perennial herb in the family Polygonaceae. They have a self-supporting growth form. They are native to Asia. They have simple, broad leaves. Individuals can grow to 1.9 m.

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EOL has data for 22 attributes, including:

Known occurrences, collected specimens and observations of Japanese Knotweed. View this species on GBIF