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Definition of Woolly thistle
1. Noun. Biennial Eurasian white hairy thistle having pale purple flowers; naturalized in North America.
Exact synonyms: Cotton Thistle, Onopordon Acanthium, Onopordum Acanthium, Scotch Thistle
Generic synonyms: Thistle
Group relationships: Genus Onopordon, Genus Onopordum, Onopordon, Onopordum
Generic synonyms: Thistle
Group relationships: Genus Onopordon, Genus Onopordum, Onopordon, Onopordum
2. Noun. Thistle of western North America having white woolly leaves.
Exact synonyms: Cirsium Flodmanii
Generic synonyms: Plume Thistle, Plumed Thistle
Specialized synonyms: Cirsium Eriophorum, European Woolly Thistle
Generic synonyms: Plume Thistle, Plumed Thistle
Specialized synonyms: Cirsium Eriophorum, European Woolly Thistle