The Comps of Mexico is a long-running series of systematic accounts of all the tribes and genera of the family Asteraceae. Chapter 22 in this treatment deals with the tribe Millerieae Lindl., subtribes Desmanthodiinae (genus Desmanthodium), Dyscritothamninae (genera Bebbia, Cymophora, Dyscritothamnus, Tetragonotheca, and Tridax), and Galinsoginae (genera Alepidocline, Alliospermum, Aphanactis, Faxonia, Galinsoga, Oteiza, Schistocarpha, Selloa, and Stenocarpha).