Thin-layer chromatography confirmed the presence of psilocybin in Psilocybe semilanceata and P. coprinifacies collected in Czechoslovakia. In P. semilanceata, this is the first proof of psilocybin in native fruit bodies. For P. coprinifacies, it is a new finding. The concentration of psychotropic compounds was species-specific and stable. Psilocin was not definitively detected.
Semerdžieva M., Nerud F. (1973): Halluzinogene Pilze in der Tschechoslowakei. – Česká Mykologie 27(1): 42–47.
