Erowid Psilocybin Mushroom Vault : Info on Comparitive psilocybe mushroom potencies

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The psilometric scale of comparative potency of selected Psilocybe mushrooms

SPECIES	% PSILOCYBIN	% PSILOCIN	% BAEOCYSTIN	REFERENCE
P. azurenscens	1.78	.38	.35	Stamets and Gartz 1995
P. bohemica	1.34	.11	.02	Gartz and Muller 1989; Gartz (1994)
P. semilanceata	.98	.02	.36	Gartz 1994
P. baeocystis	.85	.59	.10	Repke et al. 1977; Beug and Bigwood 1982(b)
P. cyanescens	.85	.36	.03	Stijve and Kuyper 1985; Repke et al. 1977
P. tampanensis	.68	.32	n/a	Gartz 1994
P. cubensis	.63	.60	.025	Gartz 1994; Stijve and de Meijer 1993
P. weilii	.61	.27	.05
P. hoogshagenii	.60	.10	n/a	Heim and Hofmann 1958
P. stuntzii	.36	.12	.02	Beug and Bigwood 1982(b); Repke et al. 1977
P. cyanofibrillosa	.21	.04	n/a	Stamets et al. 1980
P. liniformans	.16	n/d	.005	Stijve and Kuyper

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 % BAEOCYSTIN REFERENCE

P. azurenscens 1.78 .38 .35 Stamets and Gartz 1995

P. bohemica 1.34 .11 .02 Gartz and Muller 1989; Gartz (1994)

P. semilanceata .98 .02 .36 Gartz 1994

P. baeocystis .85 .59 .10 Repke et al. 1977; Beug and Bigwood 1982(b)

P. cyanescens .85 .36 .03 Stijve and Kuyper 1985; Repke et al. 1977

P. tampanensis .68 .32 n/a Gartz 1994

P. cubensis .63 .60 .025 Gartz 1994; Stijve and de Meijer 1993

P. weilii .61 .27 .05

P. hoogshagenii .60 .10 n/a Heim and Hofmann 1958

P. stuntzii .36 .12 .02 Beug and Bigwood 1982(b); Repke et al. 1977

P. cyanofibrillosa .21 .04 n/a Stamets et al. 1980

P. liniformans .16 n/d .005 Stijve 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.