Basionym Name:Arctomia delicatula Th. Fr., Nova Acta R. Soc. Scient. upsal., Ser. 3 3: 387 (1861)
Homotypic synonyms:Pannaria delicatula (Th. Fr.) Nyl., Not. Sällsk. Fauna et Fl. Fenn. Förh., Ny Ser. 8: 125 (1866)Pannularia delicatula (Th. Fr.) Cromb., J. Bot., Lond. 20: 274 (1882)Placynthium delicatulum (Th. Fr.) A.L. Sm., Monogr. Brit. Lich., Edn 2 1: 32 (1918)