Consuming an unidentified mushroom is like playing Russian Rolette.
Some species of mushrooms contain toxins that cause a prolonged
excruciating violent illness, which ends in liver failure and death.
Other poisonous species can make you so sick that you wish you were dead!
It should be noted that, in urban and woodland
habitats, deadly mushrooms are FAR more common than psychoactive
species. Deadly species can also be found in pastures, and the highly
toxic Chlorophyllum molybdites is especially common there.
To the untrained eye, many poisonous mushrooms
resemble psychoactive or culinary species. Every wild mushroom should
be considered deadly poisonous until proven otherwise.