Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
A Eurasian species, long cultivated, and collected as a garden weed in Mecosta Co. in 2003 by S. Ross.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 12, 2017. http://www.michiganflora.net/species.aspx?id=268.