The class Pneumocystidomycetes is a group of yeast-like fungi within the division Ascomycota, subdivision Taphrinomycotina. It comprises a single order, Pneumocystidales, which contains the monotypic family Pneumocystidaceae. This family includes the genus Pneumocystis, known for causing Pneumocystis pneumonia (PCP) in humans, particularly affecting immunocompromised individuals . Wikidata +4