Coefficient of Conservatism:
Coefficient of Wetness:
Rock ledges and outcrops in shade, apparently at least somewhat calcareous, though no records are from limestone areas; very local.
Including Isle Royale
MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 11, 2017. http://michiganflora.net/species.aspx?id=2809.