Coefficient of Conservatism:
Coefficient of Wetness:
Although this European species is said to be widely naturalized in eastern North America, in Michigan it is only known from sandy, weedy ground in the Nichols Arboretum, Ann Arbor, Washtenaw Co., where first collected in 1915.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 22, 2018. http://www.michiganflora.net/species.aspx?id=1552.