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Common Name:
PASTURE THISTLE
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Coefficient of Conservatism:
4
Coefficient of Wetness:
5
Wetness Index:
UPL
Physiognomy:
Nt B-Forb
M. Demmon
Meadows, fields, clearings, hillsides, river banks, sparsely forested sites; roadsides, vacant lots, pine plantations; doubtless originally in prairie openings.
This species is very similar to C. altissimum. The heads of C. discolor run a little larger (involucre ca. 2.4–3.3 cm long in our material, compared with 2–2.7 cm in C. altissimum), but precise measurements are hard to determine. The white-flowered form [f. albiflorum (Britton) House] has been collected in Calhoun, Lenawee, Oakland, and Washtenaw Cos.
Locations
Bay County
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Berrien County
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Branch County
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Calhoun County
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Cass County
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Emmet County
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Genesee County
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Grand Traverse County
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Hillsdale County
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Jackson County
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Kalamazoo County
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Kent County
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Lake County
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Lenawee County
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Livingston County
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Macomb County
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Mecosta County
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Menominee County
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Midland County
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Monroe County
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Newaygo County
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Oakland County
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St. Clair County
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Tuscola County
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Washtenaw County
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Wayne County
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Citation:
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. January 29, 2023. https://michiganflora.net/species.aspx?id=285.