Synonymy:
Agaricus trib. Psathyra Fr., Systema Mycologicum 1: 295 (1821)
Agaricus XXVIII Psathyrella Fr., Epicrisis Systematis Mycologici: 237 (1838) [1836-1838]
Astylospora Fayod, Annls Sci. Nat., Bot., sér. 7 9: 376 (1889)
Drosophila Quél., Enchiridion Fungorum in Europa media et praesertim in Gallia Vigentium: 115 (1886)
Gymnochilus Clem., in Pound & Clements, Bot. Surv. Nebraska 4: 23 (1896)
Hypholomopsis Earle, Bull. New York Bot. Gard. 5: 436 (1909)
Pluteopsis Fayod, Annls Sci. Nat., Bot., sér. 7 9: 377 (1889)
Psalliotina Velen., Novitates Mycologicae Novissimae: 155 (1940) [1939]
Psathyra (Fr.) P. Kumm., Führ. Pilzk. (Zerbst): 20 (1871)
Psathyrella subgen. Psalliotina (Velen.) Singer, Sydowia 15(1-6): 67 (1962) [1961]
Psilocybe Fayod, Annls Sci. Nat., Bot., sér. 7 9: 377 (1889)

Position in classification:
Psathyrella, Psathyrellaceae, Agaricales, Agaricomycetidae, Agaricomycetes, Basidiomycota, Fungi

Note:
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