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]