Cortinarius Mutabilis is a species of mushroom that has many synonyms. Some of the common synonyms for this mushroom include Inocybe mutabilis, Rozites mutabilis, and Agaricus mutabilis. These names refer to the same species, and are used interchangeably by mycologists and mushroom enthusiasts alike. Other synonyms for Cortinarius Mutabilis include Flammulina velutipes, Lepiota procera, and Tricholoma equestre. While these names may sound different from one another, they all describe the same mushroom. This species is known for its striking orange and yellow colors, and can be found growing in forests around the world.