Psilocybe cyanescens Mushrooms (IMAGE) Imperial College London Caption Psilocybe cyanescens mushrooms, which contain the active compound, psilocybin. Credit Imperial College London / Thomas Angus Usage Restrictions Only in relation to this news release License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.