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Definition of Cotton thistle
1. Noun. Biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America.
Exact synonyms: Onopordon Acanthium, Onopordum Acanthium, Scotch Thistle, Woolly Thistle
Generic synonyms: Thistle
Group relationships: Genus Onopordon, Genus Onopordum, Onopordon, Onopordum
Generic synonyms: Thistle
Group relationships: Genus Onopordon, Genus Onopordum, Onopordon, Onopordum
Lexicographical Neighbors of Cotton Thistle
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