World-renowned anthropologist and ethnopharmacologist Christian Ratsch provides the latest scientific updates to this classic work on psychoactive flora by two eminent researchers.

- Numerous new and rare color photographs complement the completely revised and updated text.

- Explores the uses of hallucinogenic plants in shamanic rituals throughout the world.

- Cross-referenced by plant, illness, preparation, season of collection, and chemical constituents.

Three scientific titans join forces to completely revise the classic text on the ritual uses of psychoactive plants. They...