Several common fungi, including the so-called 'magic mushrooms' Psilocybe semilanceata (also known as the liberty cap) have hallucinogenic properties and should not be eaten. Here are just a few to beware of:
Amanita muscaria is a dangerous and hallucinogenic fungus. Most of the toxic material is contained in the cap of the mushroom. At least one death has been directly attributed to poisoning by this species.
Psilocybe semilaceata is one of several
small fungi in this genus that bring on serious hallucinatory
effects if they are eaten. This particular species grows in meadows, often on land that is periodically spread with slurry or where sheep dung has enriched the soil. That, apparently, is not enough to deter some people from tucking in to these tiny toxic toadstools!
Individual people react differently to several kinds of fungi. What to one person may act as a mild stimulant can have far more serious effects on others. Hallucinogenic fungi are toxic, and some species can cause lasting damage.