Basionym Name:Lecanora lactea f. ecrustacea Harm., Bull. Séanc. Soc. Sci. Nancy, Sér. 2 32: 190 (1898)
Homotypic synonyms:Caloplaca lactea f. ecrustacea (Harm.) Zahlbr., Cat. Lich. Univers. 7: 151 (1930)