Ariocarpus is a genus of cacti. These species are usually referred to as living rocks, though the term is also used for other genera. They are protected in their native country, mostly Mexico. They are avidly sought by collectors. Most species of Ariocarpus grow very slowly. Their flowers by contrast are very striking.
Ariocarpus is known for it's psychoactive/medicinal properties and is one of the "Lost Peyotes" of Mexico.
The genus has several synonyms: