Coefficient of Conservatism:
Coefficient of Wetness:
Dry dolomite cliffs; known in Michigan only from cliffs on the east shore of Drummond Island, where collected as early as 1839, and still extant. More frequent eastward, though still are in Ontario.
See Drife & Drife (1990) for a discussion of Farwell’s mislabeled Keweenaw Co. collection.
Only on Drummond Island
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. February 24, 2018. http://www.michiganflora.net/species.aspx?id=202.