Coefficient of Conservatism:
Coefficient of Wetness:
A European introduction, more common in the western United States than in the eastern. A single Michigan collection has been seen: on waste heap from tannery at Kegomic on Little Traverse Bay, Emmet Co. (C. W. Fallass in 1896, ALBC, BLH, MICH, MSC).
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 17, 2017. http://www.michiganflora.net/species.aspx?id=2207.