Coefficient of Conservatism:
Coefficient of Wetness:
The only Michigan collection was on Ambrosia artemisiifolia at Shelby (Oceana Co.) in 1919 (S. E. Wagner 3149, NY). See remarks under C. coryli.
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 17, 2017. http://michiganflora.net/species.aspx?id=856.