In western North America, this name has been applied to Amanita aprica. In Eastern North America, it has been applied to Amanita muscaria var. guessowii. The fungus was described from Europe, and so must be from there. http://amanitaceae.org/?Amanita%20aprica, http://amanitaceae.org/?Amanita%20muscaria%20var.%20guessowii