The order Cystofilobasidiales is a group of fungi within the class Tremellomycetes, phylum Basidiomycota. Members of this order are primarily yeast-like fungi, often exhibiting unicellular or simple filamentous growth forms. They are known for their ability to reproduce asexually by budding and, in some cases, sexually through the formation of basidia. Species within Cystofilobasidiales are typically saprotrophic, living on decaying plant material or other organic substrates, and they are found in a variety of environments including soil, leaf litter, and decaying wood. Some species have been studied for their biotechnological potential, such as enzyme production or lipid accumulation. Morphologically, they are characterized by diverse cell shapes and often the presence of septate hyphae, distinguishing them from other related yeast orders.