Coefficient of Conservatism:
Coefficient of Wetness:
R. W. Smith
Dry, sandy ground; first collected by Zina Pitcher, presumably in 1829, at Fort Gratiot (Port Huron, St. Clair Co.), more recently collected in disturbed sites in the northern Lower and Upper Peninsula. Native in North America, but possibly these recent collections represent new introductions. See Cusick (2002) for a discussion.
St. Clair County
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. March 20, 2018. http://www.michiganflora.net/species.aspx?id=645.