A new species of Pinguicula from México is described and illustrated: Pinguicula nivalis, a gypsophilous endemic from the southern part of the state Nuevo León. According to Casper's monograph (1966) its taxonomic position matches the criteria of subgenus Temnoceras Barnh. em. Casper, but the species does not fit into any of the sections of this subgenus. A new section (Microphyllum) is proposed to include Pinguicula nivalis, together with two other related species (Pinguicula immaculata Zamudio & Lux and P. gracilis Zamudio).