"Basidiomycota" . . "Agaricomycetes" . . "Agaricales" . . . . . "Strophariaceae" . "P.D. Orton 1969" . "Psilocybe pratensis P.D. Orton 1969" . . . . "Psilocybe pratensis" . "Fungi" . . "Psilocybe" . .