Determiner: updated with Esslinger, T.L., 2011. N.A. Lichen Checklist (v17) 16 May 2011 (2012)
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Collector:
Sam Shushan; W. A. Weber S 4831
Date: 1955-04-17
Locality:
United States, Colorado, Boulder, Northwest slope of Green Mountain between Scout Cabin and Twin Springs. Foothills of front Range just southwest of Boulder.