Good luck finding one of these cacti in their natural habitat. Not only are Living Rocks hard to spot and in hard-to-reach locations, but they are also in danger of extinction. After 50 years of age, this spineless cacti is only four to five inches in diameter, again, making them hard to find. If you do happen to be walking by the US-Mexico Border and spot one, don’t eat it, they have similar effects to peyote but considered dangerous. If it is consumed, beware: it is considered dark sorcery by the Huichol Indians to eat.
: "Ariocarpus Fissuratus." Cactus Art Nursery. Accessed February 18, 2016. http://www.cactus-art.biz/schede/ARIOCARPUS/Ariocarpus_fissuratus/Ariocarpus_fissuratus/ariocarpus_fissuratus.htm.
: Winner, John. "10 Of The Most Unique Cacti - Listverse." Listverse. July 1, 2013. Accessed February 18, 2016. http://listverse.com/2013/07/01/10-of-the-most-unique-cacti.
: "Ariocarpus Fissuratus." Living Rocks of Mexico. Accessed February 18, 2016. http://www.living-rocks.com/fissuratus.htm.
: Cleversley, Keith. "Ariocarpus Fissuratus – False Peyote." Entheologycom RSS. Accessed February 18, 2016. http://entheology.com/plants/ariocarpus-fissuratus-false-peyote/.