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From the author of GROWING GOURMET AND MEDICINAL MUSHROOMS comes the only identification guide exclusively devoted to the world's psilocybin-containing mushrooms. Detailed descriptions and color photographs for over 100 species are provided, as well as an exploration of their long-standing (and often religious) use by ancient peoples and their continued significance to modern-day culture. Some of the species included have just been discovered in the past year or two, and still others have never before been photographed in their natural habitats.