Basionym: Agaricus panuoides Fr., Observationes mycologicae 2: 227 (1818) [MB#145812] Obligate synonyms: - Paxillus panuoides (Fr.) Fr., Epicrisis Systematis Mycologici: 318 (1838) [MB#234375] - Plicaturella panuoides (Fr.) Rauschert, Nova Hedwigia 54: 225 (1992) [MB#358776] - Crepidotus panuoides (Fr.) Pilát, Bulletin de la Société Mycologique de France 51 (3-4): 391 (1936) [MB#312264] - Agaricus atrotomentosus var. panuoides (Fr.) Pers., Mycologia Europaea 3: 46 (1828) [MB#497690] - Serpula panuoides (Fr.) Zmitr. ex Zmitr., Nov. sist. Niz. Rast.: 81 (2001) [MB#381876] - Rhymovis panuoides (Fr.) Rabenh., Deutschlands Kryptogamenflora 1: 453 (1844) [MB#508584] - Tapinia panuoides (Fr.) anon. ined. (?) [MB#456962] Taxonomic synonyms: - Agaricus acheruntius Humb., Florae Fribergensis Specimen plantas cryptogamicas praesertim subterraneas exhibens: 73 (1793) [MB#474803] - Paxillus acheruntius (Humb.) J. Schröt., Kryptogamen-Flora von Schlesien 3-1(5): 515 (1889) [MB#193579] - Tapinella panuoides f. acheruntius (Humb.) C. Hahn, Sendtnera 6: 122 (1999) [MB#474043] - Tapinella panuoides f. acheruntia (Humb.) C. Hahn: 65 (2012) [MB#587748] - Tapinella panuoides f. acheruntia (Humb.) C. Hahn: 122 (1999) [MB#587749]