Coefficient of Conservatism:
Coefficient of Wetness:
Another Old World weed, locally introduced in North America, collected in 1905 on an iron ore pile at Bessemer, Gogebic Co.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 22, 2018. http://www.michiganflora.net/species.aspx?id=441.