Coefficient of Conservatism:
Coefficient of Wetness:
Native to prairies west of the Great Lakes. First collected along a roadside in Saginaw Co. by R. W. Smith in 1990, presumably as an escape from cultivation. A very stout, unmistakable species.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. April 21, 2019. https://michiganflora.net/species.aspx?id=1959.