Psilocybe cyanescens Common names: Wavy caps, Gold tops, Copper tops. Psilocybe cyanescens is a potent hallucinogen that grows abundantly in flowerbeds mulched with bark mulch, wood shavings, sawdust and cow manure. It is found world wide. Fruiting occurs from late summer in watered areas to mid-winter. This mushroom has extreme psychological reactions including that of extreme fear. The main compounds responsible for its psychedelic effects are psilocybin and psilocin.