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Psilocybe lazoi Singer (this is a doubtful neurotropic species, considered first by Guzmán (1983) as a synonym of Psilocybe zapotecorum, but Singer, 1986, claimed that this is a non-bluing fungus independent of that of Guzmán, 1983]
Psilocybe septentrionalis (Guzmán) Guzmán (= Psilocybe subaeriginascens Höhn. var. septentrionalis Guzmán) Psilocybe serbica Moser & Horak (non ss. Krieglsteiner) Psilocybe sierrae Singer (= Psilocybe subfimetaria Guzmán & A.H. Sm.) Psilocybe silvatica (Peck) Singer & A.H. Sm. Psilocybe singeri Guzmán; Psilocybe strictipes Singer & A.H. Sm.
The most potent species are members of genus Psilocybe, such as P. azurescens, P. semilanceata, and P. cyanescens, but psilocybin has also been isolated from approximately a dozen other genera, including Panaeolus (including Copelandia), Inocybe, Pluteus, Gymnopilus, and Pholiotina.
In 2007, a paper by Redhead et al. proposed conserving the genus Psilocybe with Psilocybe semilanceata as its type species. [5] The suggestion was accepted by unanimous vote of the Nomenclature Committee for Fungi of the International Botanical Congress in 2010, meaning that P. semilanceata (a member of the bluing clade) now serves as the type species of the genus. [6]
However, in many national, state, and provincial drug laws, there is a great deal of ambiguity about the legal status of psilocybin mushrooms and the spores of these mushrooms. For more details on the legal status of psilocybin mushrooms and their spores, see: Legal status of psilocybin mushrooms.
Although hallucinogenic Psilocybe species are abundant in low-lying areas of Mexico, most ceremonial use takes places in mountainous areas of elevations greater than 1,500 meters (4,900 ft). Guzmán suggests this is a vestige of Spanish colonial influence from several hundred years earlier, when mushroom use was persecuted by the Catholic Church .
Psilocybe azurescens is a species of psychedelic mushroom whose main active compounds are psilocybin and psilocin. It is among the most potent of the tryptamine -bearing mushrooms, containing up to 1.8% psilocybin , 0.5% psilocin, and 0.4% baeocystin by dry weight, averaging to about 1.1% psilocybin and 0.15% psilocin.
Psilocybe ovoideocystidiata is a psilocybin mushroom, having psilocybin and/or psilocin as main active compounds. It is closely related to P. subaeruginascens from Java , P. septentrionalis from Japan , and P. wayanadensis from India .