Input (grade 13): It occurs naturally in the peyote cactus (Lophophora williamsii), the San Pedro cactus (Echinopsis pachanoi) and the Peruvian Torch cactus (Echinopsis peruviana), and in a number of other members of the Cactaceae plant family.
Output (grade 12): It occurs naturally in some cactuses, like the Peyote cactus, the Peruvian Torch cactus or the San Pedro cactus.