Coefficient of Conservatism:
Coefficient of Wetness:
A species of much more southern range, adventive northward in disturbed areas and along railroads; first collected in disturbed ground at Detroit (Wayne Co.) in 1906. Not found since 1930.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 23, 2018. http://michiganflora.net/species.aspx?id=1680.