Basionym: Peziza byssacea P. Karst., Fungi Fenn. Exs. Cent. 8: no. 741 (1868) [MB#374976] Obligate synonyms: - Allophylaria byssacea (P. Karst.) P. Karst., Acta Soc. Fauna Fl. Fenn. 2 (6): 131 (1885) [MB#207844] - Hyaloscypha byssacea (P. Karst.) Boud., Histoire et Classification des Discomycètes d'Europe: 127 (1907) [MB#124205] - Pezicula byssacea (P. Karst.) P. Karst., Bidrag Kännedom Finlands Natur Folk 19: 165 (1871) [MB#188915] - Helotium byssacea (P. Karst.) P. Karst. (1870) [MB#543349] - Allophylaria byssacea (P. Karst.) P. Karst., Not. Sällsk. Fauna Fl. Fenn. Förh. 11: 243 (1870) [MB#543350] - Helotium byssaceum (P. Karst.) P. Karst., Not. Sällsk. Fauna Fl. Fenn. Förh. 11: 216 (1870) [MB#662412]