Definition Lophophora williamsii, the more common of the two species of the cactus genus Lophophora, family Cactaceae, native to North America, almost exclusively to Mexico Reference "Encyclopaedia Britannica http://www.britannica.com/EBchecked/topic/454720/peyote [1.7.2011]"
Comment "Peyote is well known for its hallucinogenic effects; the plant contains at least 28 alkaloids, the principal one of which is mescaline [ IATE:1399752 ], which is isolated from the flowering heads (dried tubercles), known as peyote buttons or mescaline buttons [ IATE:1399822 ]. The more common species, L. williamsii, has pink to white flowers in summer, the fruit ripening the following year. L. diffusa, more primitive, grows in a small area in central Mexico. Its flowers are white to yellow, and the body is yellow green."
Definition Cactus du Mexique, du Texas et de l'Afrique du Nord, dont les feuilles sont douées de propriétés hallucinogènes; on en extrait divers alcaloïdes tels que la mescaline, l'anhalamine, l'anhaline, l'anhalonine Reference A.Manuila