Hygrocybe rubroalba (Hygrophoraceae, Agaricales), a new species of sect. Firmae from Brazil

A new Hygrocybe species with dimorphic basidia and spores, H. rubroalba, is described based on morphological and molecular data. Its peculiar features are a dry, bright red to purplish red, not or very slightly depressed pileus surface, and pure white lamellae that are adnate or emarginate rather than decurrent. It is phylogenetically close to H. martinicensis in sect. Firmae.