Psychoactive cactus

Many cacti are known to be psychoactive, containing phenethylamine alkaloids such as mescaline. However, the two main ritualistic (folkloric) genera are Echinopsis, of which the most psychoactive species is the San Pedro cactus (Echinopsis pachanoi, syn. Trichocereus pachanoi), and Lophophora, with peyote (Lophophora williamsii) being the most psychoactive species. Several other species pertaining to other genera are also psychoactive, though not always used with a ritualistic intent. Lophophora williamsii (peyote) Other "peyotes" Ariocarpus fissuratus Coryphantha compacta (syn. C. palmeri) Pelecyphora aselliformis Pelecyphora strobiliformis Lophophora diffusa Ariocarpus retusus Ariocarpus agavoides; kotschoubeyanus; and other species Astrophytum asterias; capricorne; myriostigma; and other species Aztekium ritteri; and other species Coryphantha elephantidens; macromeris (var. runyonii); palmeri; and other species Echinocactus grandis; grusonii; platyacanthus; visnaga; and other species Epithelantha micromeris; and other species Leuchtenbergia principis'''; and other species Lophophora species Mammillaria craigii; grahamii (var. oliviae); heyderi; (Dolichothele) longimamma; (Solisia) pectinifera; (Mamillopsis) senilis; sonorensis; and other species Obregonia denegrii Strombocactus disciformis Turbinicarpus laui; lophophoroides; jauernigii; (Pelecyphora) pseudopectinatus; schmiedickeanus; and other species Other North American psychoactive and/or medicinal cacti. Carnegiea gigantea Echinocereus salm-dyckianus (var. scheeri); triglochidiatus; and other species Pachycereus pecten-aboriginum; pringlei Echinopsis lageniformis (syn. Trichocereus bridgesii) (Bolivian torch cactus) Echinopsis macrogona (syn. Trichocereus macrogonus), > 0.01-0.05% Mescaline Echinopsis pasacana ssp. atacamensis Echinopsis pachanoi (syn. Trichocereus pachanoi) (San Pedro cactus) Echinopsis peruviana (syn. Trichocereus peruvianus) (Peruvian torch cactus) Echinopsis scopulicola (syn. Trichocereus scopulicolus), 0.82% mescaline by dry weight in the outer green layer.