Aztekium ritteri blooms throughout the summer, from the young areoles at the apex, producing an abundance of white and pink flowers measuring less than 10 mm in diameter.

These flowers are followed by small pink fruit that open when ripe and release tiny black seeds.

Seeds pyriform, 0.5 mm long, with thickly tuberculated, black testa; broad basal thread, with very large arils.

[4] There are usually two blooms each year, the first taking place in early summer and the other in midsummer (August in the Northern Hemisphere).

[6] In Mexico, Aztekium ritteri is sometimes called “peyotillo.” However this name is likely given to this plant not for its psychoactive properties, but rather for its vague similarity to the button like form of peyote (Lophophora williamsii).

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 the indigenous people of the area.