Basionym Name:Lecanora parellina Nyl., Annls Sci. Nat., Bot., sér. 4 3: 157 (1855)
Homotypic synonyms:Placopsis parellina (Nyl.) I.M. Lamb, Res. Norweg. Sci. Exped. Tristan da Cunha, 1937-1938 3: 3 (1940)Placopsis parellina f. parellina (Nyl.) I.M. Lamb, Res. Norweg. Sci. Exped. Tristan da Cunha, 1937-1938 3: 3 (1940)Placopsis parellina var. parellina (Nyl.) I.M. Lamb, Res. Norweg. Sci. Exped. Tristan da Cunha, 1937-1938 3: 3 (1940)