The "sacred mushroom" - Amanita muscariais - a mycorrhyzial species (which requires the roots of certain trees to grow on including pine, aspen, birch , spruce, fir, etc.) It is definitely hallucinogenic and toxic! Very few people know that it is the Colorado state mushroom. This image captured in Rocky Mountain National Park, east of Estes Park, Colorado.

It is one of the most famous mushrooms in the world and the subject of myths and fairy tales. It's toxins cause bizarre psychological experiences that has made it a source of interest since prehistoric times. Fatalities are rare, but it is undoubtedly dangerous in large or even moderate amounts. Symptoms appear 30 minutes to 2 hours after ingestion. Nausea and vomiting are common, but the principal effects are on the central nervous system: confusion, mild euphoria, loss of muscular coordination, profuse sweating, chills, visual distortions, a feeling of greater strength, drowsiness, and sometimes hallucinations, delusions, and convulsions.