Basionym: Agaricus perforans Hoffm., Nomencl. fung.: 215, t.4:2 (1789) [MB#243226] Obligate synonyms: - Micromphale perforans (Hoffm.) Gray, A natural arrangement of British plants 1: 622 (1821) [MB#288363] - Marasmius perforans (Hoffm.) Fr., Epicrisis Systematis Mycologici: 385 (1838) [MB#224916] - Marasmiellus perforans (Hoffm.) Antonín, Halling & Noordel., Mycotaxon 63: 366 (1997) [MB#437655] - Androsaceus perforans (Hoffm.) Pat., Les Hyménomycètes d'Europe: 105 (1887) [MB#439339] - Heliomyces perforans (Hoffm.) Singer, Collectanea Botanica 1 (3): 224 (1947) [MB#298251] - Gymnopus perforans (Hoffm.) Antonín & Noordel., Czech Mycology 60 (1): 25 (2008) [MB#511562] - Chamaeceras perforans (Hoffm.) Kuntze: 455 (1898) [MB#524319] - Gymnopus perforans subsp. perforans (Hoffm.) Antonín & Noordel., Czech Mycology 60 (1): 25 (2008) [MB#613324] - Gymnopus perforans var. perforans (Hoffm.) Antonín & Noordel., Czech Mycology 60 (1): 25 (2008) [MB#828008] - Paragymnopus perforans subsp. perforans (2019) [MB#830863]