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 % 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