Coefficient of Conservatism:
Coefficient of Wetness:
A European species, rarely established in fields and undoubtedly an escape from cultivation, as on Grand Island, Alger Co., (where collected by C. K. Dodge in 1916) and the Quincy Mine, Houghton Co.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://www.michiganflora.net/species.aspx?id=2271.