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Mexico and Colombia: Two Major Centres of Aboriginal Use of Hallucinogens

It has often been wondered why the New World is so much richer in species of plants used for hallucinogenic purposes than the Old World. There have been attempts to explain this apparent discrepancy on the basis of cultural background (LaBarre 1970). There is certainly no botanical reason why the New World flora should be considered to be richer or poorer in potential hallucinogens than the Old World, so it may not be explained on the basis of greater availability of hallucinogenic plants in the Western Hemisphere (Schultes 1973). When one considers the New World, moreover, one is struck with the great disparity in use of hallucinogens in various parts of North, Central and South America. North America (north of and exclusive of Mexico) is VlROLAr 'tfteicrdovcu {Spv. ex 3th.) 2* ftv -v i Warpur,