This genus includes only two species of cactaceae originating in Mexico. They have very slow growth and the specimens over the years can reach 15-20 cm in diameter, also producing many lateral shoots; they have a globular body, gray-green in color, with 9-11 ribs, of which the most pronounced carry small areolas with white spines that detach over the years. In summer they produce white or pink tubular flowers, generally in the apical area. These cacti are not very common as cultivation is quite difficult and growth is very slow.
The aztekium love semi-shaded positions and fear too many hours of direct sun; in winter they can bear short frosts if they are kept completely dry, to have a well developed plant it is good to grow it in places with a minimum temperature around 10 ° C.