Basionym Name:Rhizocarpon applanatum Th. Fr., Lich. Scand. (Upsaliae)(2): 618 (1874)
Homotypic synonyms:Buellia badioatra var. applanata (Th. Fr.) Boistel, Nouv. Fl. Lich. (Paris) 2: 239 (1903)Catocarpus applanatus (Th. Fr.) Arnold, Verh. Kaiserl.-Königl. zool.-bot. Ges. Wien 29: 373 (1879)Catocarpus applanatus var. applanatus (Th. Fr.) Arnold, Verh. Kaiserl.-Königl. zool.-bot. Ges. Wien 29: 373 (1879)Lecidea applanata (Th. Fr.) Leight., Lich.-Fl. Great Brit., Edn 3: 327 (1879)