Status Rank Description:
- Not enough sampling effort. Thomson, John W. American Arctic Lichens: Vol. 2. The Microlichens. University of Wisconsin Press, 1997; Brodo, Irwin M., Sylvia Duran Sharnoff, and Stephen Sharnoff. Lichens of north America. Yale University Press, 2001; Brodo, Irwin M. Keys to Lichens of North America. Yale University Press, 2016.
Decision Process Description:
; Not ranked in 2015, a micro-lichen; Reviewed in 2017 draft rank by Chris Deduke (ECCC Ottawa contract) reviewed and updated by S Carriere (July 2019)