Basionym Name:Gyrophora anthracina f. discissa Th. Fr., Lich. Scand. (Upsaliae)(1): 166 (1871)
Homotypic synonyms:Gyrophora rigida var. discissa (Th. Fr.) Du Rietz, Ark. Bot. 19(no. 12): 4 (1925)Umbilicaria rigida var. discissa (Th. Fr.) Frey, Rabenh. Krypt.-Fl., Edn 2 (Leipzig) 9(4.1): 397 (1933)