cotton thistle
biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America • Syn: woolly thistle, Scotch thistle, Onopordum acanthium, Onopordon acanthium • Hypernyms: thistle • Member Holonyms: Onopordum, genus Onopordum, Onopordon, genus Onopordon
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