Synonymy:
Agaricus spumosus Fr., Systema Mycologicum 1: 252 (1821)
Flammula spumosa (Fr.) P. Kumm., Führ. Pilzk. (Zerbst): 81 (1871)
Dryophila spumosa (Fr.) Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 70 (1886)
Naucoria spumosa (Fr.) Henn., in Engler & Prantl, Nat. Pflanzenfam., Teil. I (Leipzig) 1(1**): 251 (1898) [1900]
Gymnopilus spumosus (Fr.) Murrill, Mycologia 4(5): 254 (1912)
Pholiotina spumosa (Fr.) Singer, Lilloa 22: 517 (1951) [1949]

Flammula spumosa var. unicolor Peck, Bull. N.Y. St. Mus. 167: 35 (1913) [1912]

Pholiota spumosa var. chrysocystidiophora Singer, Beih. Nova Hedwigia 29: 274 (1969)

Pholiota spumosa var. crassitunica Singer, Beih. Nova Hedwigia 29: 272 (1969)

Position in classification:
Pholiota, Strophariaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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