Xanthium strumarium L.
Coefficient of Conservatism: *
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Ad A-Forb

A nearly cosmopolitan weed of disturbed area, but also on shores of rivers and lakes, and moist openings in floodplains, perhaps in part native, it was collected as early as 1838 by the First Survey in St. Joseph Co. but on a dry roadside, not a more natural habitat.

Numerous species have been segregated in the past but are now generally recognized as part of the variable X. strumarium.


Allegan County
Arenac County
    Including Charity Island
Bay County
Benzie County
Berrien County
Cass County
Cheboygan County
Clinton County
Emmet County
Gratiot County
Hillsdale County
Ingham County
Iosco County
Isabella County
Jackson County
Kalamazoo County
Kent County
Lapeer County
Lenawee County
Macomb County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ottawa County
Saginaw County
Shiawassee County
St. Clair County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. October 22, 2021. https://michiganflora.net/species.aspx?id=518.