Coefficient of Conservatism:
Coefficient of Wetness:
An Old World native, locally naturalized in North America but not collected in Michigan until 1975, in railroad yards south of New Buffalo, Berrien Co., by R. Schulenberg & G. S. Wilhelm.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 25, 2018. http://michiganflora.net/species.aspx?id=1948.