Basionym: Agaricus cyathiformis Bull., Herbier de la France 6: t. 248 (1786) [MB#461564] Obligate synonyms: - Clitocybe cyathiformis (Bull.) P. Kumm., Der Führer in die Pilzkunde: 120 (1871) [MB#231563] - Cantharellula cyathiformis (Bull.) Singer, Annales Mycologici 34: 331 (1936) [MB#262601] - Omphalia cyathiformis (Bull.) Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 24 (1886) [MB#301993] - Omphalia cyathiformis var. cyathiformis (Bull.) Quél.: 129 (1872) [MB#582599] Taxonomic synonyms: - Agaricus tardus Pers., Synopsis methodica fungorum: 461 (1801) [MB#486498] - Omphalia tarda (Pers.) Gray, A natural arrangement of British plants 1: 614 (1821) [MB#486497] - Clitocybe atra Velen., Novitates mycologicae: 68 (1939) [MB#257681] - Pseudoclitocybe atra (Velen.) Harmaja, Karstenia 14: 126 (1974) [MB#321758] - Clitocybe cyathiformis f. americana Kauffman, Papers of the Michigan Academy of Sciences 8: 192 (1927) [MB#262602] - Agaricus cyathiformis Bull. & Vent., Hist. champ. France: 512, t. 568:1, t. 575 (1809) [MB#490165] - Agaricus cinerascens Batsch, Elenchus fungorum. Continuatio prima: 125, t. 19:101 (1786) [MB#495324] - Clitocybe cyathiformis var. cinerascens (Batsch) P. Karst. (1879) [MB#138670] - Agaricus cyathiformis var. cinerascens (Batsch) Fr., Epicrisis Systematis Mycologici: 74 (1838) [MB#499528] - Clitocybe cinerascens (Batsch) Sacc., Sylloge Fungorum 5: 177 (1887) [MB#528903] - Clitocybe cinerescens (Batsch) Sacc. (1887) [MB#155923] - Agaricus poculum Peck, Annual Report on the New York State Museum of Natural History 23: 77 (1872) [MB#490610] - Clitocybe poculum (Peck) Sacc., Sylloge Fungorum 5: 181 (1887) [MB#158032]