Coefficient of Conservatism:
Coefficient of Wetness:
Collected in railroad yards at Detroit, Wayne Co. in 1918 and at Tecumseh, Lenawee Co., in 1920; the only other collection seen is from Palisade Park (Van Buren Co.) in 1941.
Van Buren County
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 14, 2017. http://www.michiganflora.net/species.aspx?id=49.