Basionym: Agaricus fibula Bull., Herbier de la France 4: t. 186 (1784) [MB#227230] Obligate synonyms: - Omphalia fibula (Bull.) P. Kumm., Der Führer in die Pilzkunde: 106 (1871) [MB#213096] - Mycena fibula (Bull.) Kühner, Encyclopédie Mycologique 10: 607 (1938) [MB#252145] - Marasmiellus fibula (Bull.) Singer, Sydowia 2 (1-6): 32 (1948) [MB#287904] - Gerronema fibula (Bull.) Singer, Publicações do Instituto de Micologia da Universidade do Recife 304: 13 (1961) [MB#314437] - Hemimycena fibula (Bull.) Singer, Annales Mycologici 41: 123 (1943) [MB#331860] - Omphalina fibula (Fr.) Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 46 (1886) [MB#438769] - Omphalopsis fibula (Bull.) Murrill, North American Flora 9 (5): 314 (1916) [MB#503115] - Hygrocybe fibula (Bull.) Fayod, Annales des Sciences Naturelles Botanique ser. 7, 9: 309 (1889) [MB#366349] - Micromphale fibula (Bull.) Gray, A natural arrangement of British plants 1: 623 (1821) [MB#535201] Taxonomic synonyms: - Rickenella aulacomniophila G. Kost, Zeitschrift für Mykologie 50: 219 (1984) [MB#105752] - Rickenella fibula var. aulacomniophila (G. Kost) Bon, Documents Mycologiques 22 (86): 40 (1992) [MB#537171] - Rickenella fibula var. aulocomniophila (G. Kost) Bon (1992) [MB#359699] - Micromphale fibulare (Bull.) Gray, A natural arrangement of British plants 1: 623 (1821) [MB#486520]