<P> edibility: poisonous </P> <P> Amanita muscaria, commonly known as the fly agaric or fly amanita, is a basidiomycete mushroom, one of many in the genus Amanita . It is also a muscimol mushroom . 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 and birch plantations, and is now a true cosmopolitan species . It associates with various deciduous and coniferous trees . </P> <P> Arguably the most iconic toadstool species, the fly agaric is a large white - gilled, white - spotted, usually red mushroom, and is one of the most recognisable and widely encountered in popular culture . </P> <P> Although classified as poisonous, reports of human deaths resulting from its ingestion are extremely rare . After parboiling--which weakens its toxicity and breaks down the mushroom's psychoactive substances--it is eaten in parts of Europe, Asia, and North America . Amanita muscaria is noted for its hallucinogenic properties, with its main psychoactive constituents being the compounds ibotenic acid and 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 other places such as the Middle East, Eurasia, North America, and Scandinavia . </P>

What is the red mushroom with white dots