Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The genus Aztekium contains only two species of small globular cactus. Discovered in 1929 by F. Ritter, in Rayones, Nuevo Leon, Mexico, this genus was thought to be monotypic (with Aztekium ritteri) until a second species (Aztekium hintonii) was discovered by George S. Hinton, in Galeana, Nuevo Leon in 1991. This genus is found only in Mexico and is native to the state of Nuevo Leon. It was estimated[by whom?] that there were in the order of tens of millions of plants of A. hintonii, and at present most of its range is pristine. Though A. ritteri has been collected for decades and there has been destruction of its habitat, the number of plants in habitat is several million.

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