Basionym Name:Placodium turkuense Vain., Ann. bot. Soc. Zool.-Bot. fenn. Vanamo 6: 320 (1929)
Homotypic synonyms:Caloplaca turkuensis (Vain.) Zahlbr., [as 'turkensis'] Cat. Lich. Univers. 8: 589 (1932)