Basionym Name:Placodium lorentzii Müll. Arg., Flora, Regensburg 72: 510 (1889)
Homotypic synonyms:Acarospora lorentzii (Müll. Arg.) Hue, Nouv. Arch. Mus. Hist. Nat., Paris, 5 sér. 1(2): 162 (1909)Acarospora lorentzii var. lorentzii (Müll. Arg.) Hue, Nouv. Arch. Mus. Hist. Nat., Paris, 5 sér. 1(2): 162 (1909)