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The psilometric scale of comparative potency of selected Psilocybe mushrooms

Please note that these do not represent average values for widely sampled populations. Just because a mushroom species has some samples that show high or low concentrations does not mean that all mushrooms of that type have levels matching those in this chart.


SPECIES% PSILOCYBIN% PSILOCIN% BAEOCYSTINREFERENCE
P. azurenscens1.78.38.35Stamets and Gartz 1995
P. bohemica1.34.11.02Gartz and Muller 1989; Gartz (1994)
P. semilanceata.98.02.36Gartz 1994
P. baeocystis.85.59.10Repke et al. 1977; Beug and Bigwood 1982(b)
P. cyanescens.85.36.03Stijve and Kuyper 1985; Repke et al. 1977
P. tampanensis.68.32n/aGartz 1994
P. cubensis.63.60.025Gartz 1994; Stijve and de Meijer 1993
P. weilii.61.27.05
P. hoogshagenii.60.10n/aHeim and Hofmann 1958
P. stuntzii.36.12.02Beug and Bigwood 1982(b); Repke et al. 1977
P. cyanofibrillosa.21.04n/aStamets et al. 1980
P. liniformans.16n/d.005Stijve and Kuyper


Psilocybin Mushrooms of the World, Paul Stamets

Citations for references:
  • Stivje, de Meijer. "Macromycetes from the state of Parana, Brazil. 4 The psychoactive species" Arq Biol Technol 1993 36(2):313-329
  • Gartz and Muller. "analyses and cultivation of fruitbodies and mycelia of Psilocybe bohemica." Biochem Physiol Pflanzen. 1989. 184:337-341
  • Stamets and Gartz. "a new caerulescent Psilocybe from the Pacitic Coast of Northwestern North America". Integration 6. 1995
  • Repke D, Leslie D, Guzman G. "Baeocystin in Psilocybie, Conocybe, and Panaeolus." LLoydia. 1977. 40:566-578
  • Beug M, Bigwood J. "Quantitative analysis of psilocybin and psilocin in Psilocybe baeocystic Singer and Smith by high-performance liquid chromatography and by thin-layer chromatography." Journal of Chromatography 1981 207:370-385.
  • Beug M, Bigwood J. "Variation of psilocybin and psilocin levels with repeated flushes (harvests) of mature sporocaps of Psilocybe cubensis (earle) Singer." Journal of Ethnopharmacology 1982. 5:271-291.
  • Beug M, Bigwood J. "Psilocybin and psilocin levels in twenty species from seven genera of wild mushrooms in the Pacific Northwest (USA)" Journal of Ethnopharmacology 1982. 5:271-278.
  • Stivje TC, Kuyper TW. "Occurence of psilocybin in various higher fungi from several European countries" Planta Medica 1985 51(5):385-387.
  • Heim RA, Hofmann A. "La psilocybine et la psilocine chez les psilocybe et strophaires hallucinogenes." Les champignons hallucinogenes du Mexique. 1958. 6:258-267. Paris: Editions du Museum National d'Histoire Naturelle.
  • Stamets P, Beug PM, Bigwood J, Guzman G. "a new species and a new variety of Psilocybe from North America" Mycotaxon 1980 11:476-484.