Amanita muscaria, commonly known as the fly agaric or fly amanita, is a poisonous and psychoactive basidiomycete fungus, one of many in the genus Amanita. Native throughout the temperate and boreal regions of the Northern Hemisphere, Amanita muscaria has been unintentionally introduced to many countries in the southern hemisphere, generally as a symbiont with pine plantations, and is now a true cosmopolitan species. It associates with various deciduous and coniferous trees.
Although it is generally considered poisonous, there are few documented human deaths from its consumption, and after having been parboiled it is eaten as a food in parts of Europe, Asia, and North America. Amanita muscaria is noted for its hallucinogenic properties, with its main psychoactive constituent being the compound muscimol. The mushroom was used as an intoxicant and entheogen by the peoples of Siberia, and has a religious significance in these cultures. There has been much speculation on possible traditional use of this mushroom as an intoxicant in places other than Siberia, such as the Middle East, India, Eurasia, North America, and Scandinavia.
photo by Edwin Kats