Xanthium spinosum L.
Common Name: SPINY COCKLEBUR
Coefficient of Conservatism: *
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Ad A-Forb

Probably originally introduced from South or Central America, now a widespread weed throughout the world. Collected only twice in Michigan: in disturbed sites at Detroit (Wayne Co.) in 1893 and on the shores of Little Traverse Bay (Emmet Co.) in 1896.

Locations

Emmet County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 16, 2017. http://michiganflora.net/species.aspx?id=517.