Sber. Akad. Wiss. Wien, Math.-naturw. Kl., Abt. 1 102: 164 (1893). Type locality: Germany, Bayern, ad lapides calcareos (Solnhofener Formation) montium sterilium prope Eichstätt, F. Arnold, Körber: Lich. Sel. Germ. Exs.: 127 (ZT - lectotype). Designated by Mayrhofer & Moberg, Nordic Lichen Flora 2: 72 (2002).