Basionym Name:Placodium deminutum Müll. Arg., Flora, Regensburg 71: 204 (1888)
Homotypic synonyms:Lecanora deminuta (Müll. Arg.) Stizenb., Ber. Tät. St Gall. naturw. Ges.: 105 (1890)Squamarina deminuta (Müll. Arg.) C.W. Dodge, Beih. Nova Hedwigia 38: 32 (1971)