Basionym:
Agaricus mollis Schaeff., Fungorum qui in Bavaria et Palatinatu circa Ratisbonam nascuntur Icones 4: 49, tab. 213 (1774) [MB#219717]
Obligate synonyms:
- Crepidopus mollis (Schaeff.) Gray, A natural arrangement of British plants 1: 616 (1821) [MB#486506]
- Derminus mollis (Schaeff.) J. Schröt., Kryptogamen-Flora von Schlesien 3-1(5): 578 (1889) [MB#356584]
- Agaricus gelatinosus J.F. Gmel., Systema Naturae 2 (2): 1429 (1792) [MB#490226]
- Agaricus canescens Batsch, Elenchus fungorum: 95, t. 9:38 (1783) [MB#495312]
Taxonomic synonyms:
- Agaricus alveolus Lasch, Linnaea 4: 547 (1829) [MB#375117]
- Crepidotus alveolus (Lasch) P. Kumm., Der Führer in die Pilzkunde: 74 (1871) [MB#184331]
- Crepidotus mollis var. alveolus (Lasch) Quélet, Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 108 (1886) [MB#803032]
- Agaricus chimonophilus Berk. & Broome, Ann. Mag. nat. Hist. (1854) [MB#457269]
- Agaricus ralfsii Berk. & Broome, Annals and Magazine of Natural History 12: 372 (1883) [MB#457270]
- Crepidotus ralfsii (Berk. & Broome) Sacc., Sylloge Fungorum 5: 881 (1887) [MB#213913]
- Crepidotus fraxinicola Murrill, North American Flora 10 (3): 150 (1917) [MB#185823]
- Crepidotus alabamensis Murrill, North American Flora 10 (3): 150 (1917) [MB#190205]
- Agaricus mollis Schrad., Spicilegium Florae Germanicae: 133 (1794) [MB#490299]