Cacteae

Cacteae is a tribe of plants of the family Cactaceae found mainly in North America especially Mexico. , the internal classification of the family Cactaceae remained uncertain and subject to change. A classification incorporating many of the insights from the molecular studies was produced by Nyffeler and Eggli in 2010.
Genera.
The classification of cacti is in flux; the following list of genera is that from Nyffeler and Eggli (2010).
The type genus is "Mammillaria".