Edited by Ralph Metzner, Ph.D. Teonanácatl was the name given to the visionary mushrooms of Mesoamerica by the Aztecs, who used them in shamanic religious ceremonies for healing and divination. In modern times, the visionary mushrooms have become the focus of study into their psychological and spiritual benefits, and have been cultivated and collected worldwide by those seeking to expand their consciousness. In this inspiring work, Dr. Metzner has assembled a collection of writings by some of the most influential thinkers in the field, including John Allen, Timothy Leary, Terence McKenna and Paul Stamets. 293 pages, softcover.