Amanita muscaria, commonly known as the fly agaric or fly amanita, is a basidiomycete fungus of the genus Amanita. It is a large white-gilled, white-spotted mushroom typically featuring a bright red cap covered with distinctive white warts. It is one of the most recognizable fungi in the world. A. muscaria exhibits complex genetic diversity that suggests it is a species complex rather than a single species.
https://en.wikipedia.org/wiki/Amanita_muscaria