Coefficient of Conservatism:
Coefficient of Wetness:
A native of Europe, collected as an escape from cultivation blooming April 1896 on sandy shores of Belle Isle, Wayne Co. (O. A. Farwell 860, BLH).
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://www.michiganflora.net/species.aspx?id=2375.