Basionym Name:Parmelia quarta Darb., Nat. Antarct. Exp. 1901-1904, Nat. Hist. 5(Botany): 6 (1910)
Homotypic synonyms:Omphalodium quartum (Darb.) C.W. Dodge & G.E. Baker, Ann. Mo. bot. Gdn 25: 561 (1938)Umbilicaria quarta (Darb.) Cretz., Bull. Grăd. Bot. Muz. Bot. Univ. Cluji 21: 139 (1941)