Aquatic hyphomycetes
Aquatic hyphomycetes (also known as Ingoldian or freshwater fungi) are anamorphic (asexual) fungi that live in aquatic habitats. This group of fungi is mostly classified based on their morphology. Most aquatic hyphomycetes are ascomycetes, but members from other groups are found as well, such as mitosporic basidiomycetes. Aquatic hyphomycetes belong to an asexual stage of a fungus life cycle, and most of these species have not had their teleomorph (sexual) stage identified, if one exists.