Aztekium ritteri is a species of cactus, in the genus Aztekium. It is one of the two species that make up the genus. The species originated in Mexico. Aztekium is a genus endemic to Mexico. 1. * REDIRECT In Mexico, Aztekium ritterii it is called “Peyotillo.” However, even though it contains N-methyltyramine, hordenine, anhalidine, mescaline, pellotine, and 3-methoxytyramine, there have been no ethnobotanical reports that state that it has ever been used by native Indians. 1. * REDIRECT