Amanita muscaria var. formosa

Amanita muscaria" var. "formosa, known as the yellow orange fly agaric, is a hallucinogenic and poisonous basidiomycete fungus of the genus "Amanita". This variety, which can sometimes be distinguished from most other "A. muscaria" by its yellow cap, is a European taxon, although several North American field guides have referred 'A. muscaria" var. "guessowii' to this name. American mycologist Harry D. Thiers described a yellow-capped taxon that he called var. "formosa" from the United States, but it is not the same as the European variety.
Controversy.
Recent DNA evidence has shown "Amanita muscaria" var. "formosa" to be a distinct species from "Amanita muscaria" and it will be getting its own species status soon. "Amanita muscaria" var. "formosa" has been described as 'Amanita muscaria" var. "guessowii'.