Hypocenomyce friesii (Ach.) P. James & Gotth. Schneid.
(Ach.) P. James & Gotth. Schneid.
Species data compiled from the USDA PLANTS Database and other open botanical data sources. Images used under Creative Commons or equivalent licenses. Distribution data from USDA state-level records.
Find cultivated varieties related to Fries' Cockleshell Lichen