Basionym: Peziza firma Pers., Synopsis methodica fungorum: 658 (1801) [MB#143997] Obligate synonyms: - Ciboria firma (Pers.) Fuckel, Jahrbücher des Nassauischen Vereins für Naturkunde 23-24: 312 (1870) [MB#187603] - Poculum firmum (Pers.) Dumont, Mycologia 68 (4): 870 (1976) [MB#320771] - Peziza ochroleuca Bolton, An History of Fungusses, Growing about Halifax 3: 105 (1790) [MB#198805] - Ciboria ochroleuca (Bolton) Massee, British Fungus-Flora 4: 274 (1895) [MB#439351] - Phialea firma (Pers.) Gillet, Champignons de France. Les Discomycètes 4: 101 (1881) [MB#146327] - Hymenoscyphus firma (Pers.) W. Phillips (1887) [MB#461972] - Calycina firma (Pers.) Gray, A natural arrangement of British plants 1: 670 (1821) [MB#491733] - Lanzia firma (Pers.) anon. (?) [MB#585364] - Cenangium firmum (Pers.) De Not., Commentario della Società Crittogamologica Italiana 1 (5): 385 (1864) [MB#581933] - Helotium firmum (Pers.) P. Karst., Notiser ur Sällskapets pro Fauna et Flora Fennica Förhandlingar 11: 233 (1870) [MB#588449] - Hymenoscyphus firmus (Pers.) W. Phillips, A manual of the British Discomycetes: 123 (1887) [MB#565796]