Coefficient of Conservatism:
Coefficient of Wetness:
B. S. Walters
Fields, roadsides. A European species locally naturalized in North America. First collected in 1923 in Allegan Co.
Only on Bois Blanc, Mackinac, Round Islands
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. July 5, 2020. https://michiganflora.net/species.aspx?id=978.