Homotypic Synonyms See Note

Basionym Name:
Lecanora saxicola f. ecrustacea Nyl., in Weddell, Bull. Soc. bot. Fr. 20: 150 (1873)

Homotypic synonyms:
Lecanora muralis f. ecrustacea (Nyl.) Zahlbr., Cat. Lich. Univers. 5: 638 (1928)
Placolecanora muralis f. ecrustacea (Nyl.) Kopach., in Kopaczevskaja et al., Opredelitel' Lishaĭnikov SSSR Vypusk (Handbook ol the lichens of the U.S.S.R.) (Leningrad) 1: 228 (1971)
Placolecanora muralis f. ecrustacea (Nyl.) Kopach., Nov. sist. Niz. Rast. 9: 294 (1972)
Squamaria saxicola f. ecrustacea (Nyl.) Boistel, Nouv. Fl. Lich. (Paris) 2: 92 (1903)