Homotypic Synonyms See Note

Basionym Name:
Lecanora thulensis Th. Fr., Lich. Scand. (Upsaliae)(1): 227 (1871)

Homotypic synonyms:
Placolecanora thulensis (Th. Fr.) Kopach., in Kopaczevskaja et al., Opredelitel' Lishaĭnikov SSSR Vypusk (Handbook ol the lichens of the U.S.S.R.) (Leningrad) 1: 231 (1971)
Placolecanora thulensis (Th. Fr.) Kopach., Nov. sist. Niz. Rast. 9: 295 (1972)
Squamaria thulensis (Th. Fr.) H. Olivier, Mém. Soc. natn. Sci. nat. Cherbourg 37: 52 (1909)
Squamaria thulensis var. thulensis (Th. Fr.) H. Olivier, Mém. Soc. natn. Sci. nat. Cherbourg 37: 52 (1909)