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Image of Ray's knotgrass
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Ray's Knotgrass

Polygonum oxyspermum Mey. & Bunge

Agriculture and Agri-Food Canada. Agriculture and Agri-Food Canada. Year: 2015.   cc-by-nc-sa-3.0

Polygonum oxyspermum (Ray's Knotgrass) is a species of perennial herb in the family Polygonaceae.

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EOL has data for 4 attributes, including:

Known occurrences, collected specimens and observations of Ray's knotgrass. View this species on GBIF