Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
A garden perennial of Eurasian origin, occasionally escaped and established in lawns and fields. First collected in 1917 in Washtenaw Co.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 25, 2018. http://michiganflora.net/species.aspx?id=121.