Basionym Name:Amphiloma millegranum Müll. Arg., Flora, Regensburg 69(8): 124 (1886)
Homotypic synonyms:Austroplaca millegrana (Müll. Arg.) Søchting, Frödén & Arup, in Arup, Søchting & Frödén, Nordic Jl Bot. 31(1): 38 (2013)Caloplaca millegrana (Müll. Arg.) Zahlbr., Cat. Lich. Univers. 7: 247 (1931)Placodium millegranum (Müll. Arg.) Darb., Wiss. Ergebn. Schwed. Südpol.-Exp., 1901-1903 4(no. 11): 58 (1912)