Coefficient of Conservatism:
Coefficient of Wetness:
A native of Europe. First collected in Wayne Co. in 1875, then collected by C. R. & F. N. Hanes as a garden weed at Schoolcraft, Kalamazoo Co. in 1935 and 1937. The species persisted there for at least a decade.
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=69.