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Common Name:
WHITE SNAKEROOT
Synonym:
Eupatorium rugosum
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Coefficient of Conservatism:
4
Coefficient of Wetness:
3
Wetness Index:
FACU
Physiognomy:
Nt P-Forb
R. Schipper
Eupatorium rugosum of Michigan Flora.
Swamps and thickets, as in ravines, floodplains, and rich hardwoods; openings and trails, cedar swamps, river banks.
Native in southern Michigan north, near the Great Lakes, to Benzie and Iosco Cos, and in the western Upper Peninsula. A 1940 collection from along a roadside in Emmet Co. was surmised to be an escaped from cultivation.
A toxic substance in this plant can cause “trembles,” a fatal disease of cattle which have browsed on it and transmittable to humans by their milk, in whom the consequent “milk sickness” caused many deaths on the 19th century frontier in this country (Duffy, 1990).
Locations
Alger County
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Allegan County
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Arenac County
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Baraga County
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Barry County
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Bay County
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Benzie 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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Delta County
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Dickinson County
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Eaton County
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Emmet County
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Genesee County
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Gogebic County
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Gratiot County
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Hillsdale County
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Houghton County
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Ingham County
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Iosco County
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Iron 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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Lapeer County
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Lenawee County
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Livingston County
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Macomb County
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Marquette County
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Mason County
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Menominee County
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Monroe County
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Muskegon County
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Newaygo County
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Oakland County
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Oceana County
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Ontonagon County
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Ottawa County
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Schoolcraft County
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St. Clair County
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St. Joseph County
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Tuscola County
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Van Buren 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. February 1, 2023. https://michiganflora.net/species.aspx?id=211.