"Kentucky Native Plant Society. Scanned by Omnitek Inc."   cc-by-nc-sa-3.0

Polygonum bellardii (Narrowleaf Knotweed) is a species of annual herb in the family Polygonaceae. They have a self-supporting growth form. They are native to Canada. They have simple, broad leaves. Individuals can grow to 0.49 m.

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EOL has data for 17 attributes, including:

Known occurrences, collected specimens and observations of narrowleaf knotweed. View this species on GBIF
"Kentucky Native Plant Society. Scanned by Omnitek Inc."   cc-by-nc-sa-3.0