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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.
In November 2020, the state of Oregon became the first U.S. state to both decriminalize psilocybin and also legalize it for supervised non-medical use after the Ballot Measure 109 passed. [ 1 ] In November 2020, the District of Columbia passed initiative 81; the short title of the initiative was the Entheogenic Plant and Fungus Policy Act of ...
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.
Possession and use of psilocybin mushrooms, including the bluing species of Psilocybe, is therefore prohibited by extension. However, in many national, state, and provincial drug laws, there has been a great deal of ambiguity about the legal status of psilocybin mushrooms, as well as a strong element of selective enforcement in some places.
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.
Psilocybe species commonly found in the tropics include P. cubensis and P. subcubensis. P. semilanceata —considered by Guzmán to be the world's most widely distributed psilocybin mushroom [ 164 ] —is found in Europe, North America, Asia, South America, Australia and New Zealand, but is entirely absent from Mexico. [ 162 ]