Amanita Muscaria
a little research yields:
Also called the Fly Agaric.
It is, however, highly toxic, so don't take a batch of these home to the family. Fatalities from ingesting this mushroom are fairly rare, but many a rebellious high school student has regretted experimenting with this dangerous mushroom.

Amanita muscaria's history has it associated with both Shamanic and magical practices and it was identified as the "Soma" of the ancient (4000 BC) Rig Veda by Gordon Wasson. So Amanita muscaria has historical use as far back as we have history, and it shouldn't be hard to suppose that prehistoric man, in his activities as hunter/gatherer, recognized that there were mushrooms and other plants that had benefits not related to hunger. Our ancestors must surely have been intrigued by the Amanita muscaria. They appeared magically from nowhere, in strange and beautiful shapes and colors and gave magical visions of the beyond when eaten.

Today Amanita muscaria mushrooms are widely known: the Alice in Wonderland mushrooms, the fairytale mushrooms regularly seed in fairy tale books. Yet most people aren't aware that they are, in fact, real.