Basionym Name:Lecanora diphasia Tuck., Amer. J. Sci. Arts, Ser. 2 25: 426 (1858)
Homotypic synonyms:Blastenia diphasia (Tuck.) Zahlbr., Cat. Lich. Univers. 7: 28 (1930)Caloplaca diphasia (Tuck.) Wetmore, Mycologia 86(6): 823 (1995)Placodium diphasium (Tuck.) Tuck., Proc. Amer. Acad. Arts & Sci. 6: 287 (1866)