APTROOT, A. & DE BRUYN, U. 2011. Two recent records of Ramalina calicaris in Germany. — Herzogia 24: 147–149.
Details are provided for two recent records of Ramalina calicaris in Germany from Borkum, East Frisian Islands (Lower Saxony) and Gerolstein, Eifel (Rheinland-Pfalz).