Ric. Auton. Lich. Crost. (Verona): 133 (1852). Basionym: Lichen dryinus Ach., Lich. Suec. Prodr. (Linköping): 16 (1799) [1798]. Type locality: Europe and North America.
Basionym: Lichen dryinus Ach., Lich. Suec. Prodr. (Linköping): 16 (1799) [1798].
Type locality: Europe and North America.