Hallucinogens have been traditionally used to encourage spiritual growth, heighten perception, inspire personal development, or expand reality. Comprehensive Guide to Hallucinogenic Plants focuses on ethnobotanical aspects of hallucinogenic plant species, featuring history on how they were used in ancient societies, identifying chemical compounds, and explaining modern medicinal uses, as well as conservation initiatives. The book emphasizes the importance of understanding the cultural, country-wide, environmental, and scientific importance of these medicinal plants.

Some of the 50 plants in this work covered include Ayahuasca, ginger, kanna, dream herb, iboga, peyote, canary broom, coral tree, catnip, wild rue, kava, mandrake and golden's angel trumpet. Each chapter includes information on historical plant use, identification of chemical compounds, and explains modern medicinal uses. It highlights the importance of studying, evaluating, and utilizing these plants not in isolation, but from a global perspective.

This book appeals to plant scientists, botanists, ethnobotanists, pharmacologists, and those with an interest in alternative or herbal medicine.