Coefficient of Conservatism:
Coefficient of Wetness:
An Old World species, widely established across northern North America but first collected in Michigan, along a roadside north of Bergland, Ontonagon Co. by D. Henson in 1985. The species is poisonous to livestock.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 22, 2018. http://michiganflora.net/species.aspx?id=440.