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Asteraceae
Cirsium
Cirsium occidentale var. candidissimum
Cirsium occidentale var. candidissimum
J.F.Macbr., 1918
2% complete
No common name
Contr. Gray Herb. 53: 22 (1918)
Specifications
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Synonyms
Carduus candidissimus
Greene
Cirsium occidentale subsp. candidissimum
Petr.
Cirsium pastoris
J.T.Howell
Cirsium candidissimum
Davidson & Moxley