Reference

Lidia Itati Ferraro, Robert Lücking (1997): New Species or Interesting Records of Foliicolous Lichens III. Arthonia crystallifera spec. nova (Lichenized Ascomycetes: Arthoniaceae), with a World-Wide Key to the Foliicolous Arthoniaceae. – Phyton, Annales Rei Botanicae, Horn – 37_1: 61 - 70.