a Echinopsis pachanoi , used for healing and religious divination in the Andes Mountains region for over 3000 years, Saint Peter cactus, "to reach heaven while still on earth." mescaline Lophophora williamsii Psychoactive mushrooms-- psilocybin mushrooms Psilocybe semilanceata Psilocybe subaeruginascens Psilocybe cyanofriscosa psilocybin psilocin Mayan "mushroom stones" of Guatemala serotonin The use of chemicals to induce altered states of mind dates to antiquity and includes the use of plants such as thornapple ( Datura stramonium, 曼陀罗) that binations of anticholinergic alkaloids. History/Military Relevance 600 BC: Solon hellobore roots throw into river diarrhea 200 BC: Carthaginians Mandragora-laced wine narcosis Mandragora officinarum (毒参茄,風茄)