Mescaline

Fast-growing columnar cactus native to the Andes containing mescaline. Central to traditional Andean shamanism for thousands of years.

Tall, blue-green columnar cactus closely related to San Pedro and often substantially more potent — one of the major mescaline-bearing cacti of the central Andes.

Slow-growing, spineless cactus containing mescaline. One of the most ancient and culturally significant entheogens of the Americas.

Small, slow-growing Mexican cactus whose tuberculate ribs resemble a woodlouse (whence "aselliformis"). Contains low concentrations of mescaline and other phenethylamines. Sometimes called peyotillo and used by some Huichol bands as an addition to or substitute for true peyote.

Fast-growing columnar cactus from Bolivia containing mescaline. Popular in both traditional and modern entheogenic use.

Massive columnar cactus of the northwestern Argentine Andes, reaching 10 m or more — one of the largest cacti outside Mexico. Contains mescaline at low concentrations alongside other phenethylamines. Less culturally prominent than San Pedro but used in some Andean curandero traditions.