In that case, however, why does the towering San Pedro cactus, a distant relative of peyote that does have spines, also produce mescaline, though in smaller amounts? The biochemical pathway of ...

Mescaline is a natural psychedelic derived from the Mexican peyote cactus and the San Pedro cactus, native to Peru and Ecuador. It induces hallucinogenic effects similar to those of LSD and magic ...