This web site is devoted to fungi in class Euascomycetes (hereafter referred to as ascomycetes) that occur in freshwater habitats. It includes general background information about the group, a referenced database listing the ascomycetes reported from freshwater (World Records Database), a series of illustrated profiles of freshwater ascomycete species (Species Monograph), a database of asexual states (anamorphs) reported for freshwater ascomycetes (teleomorphs), a literature database with references cited, and a database of mitosporic ascomycetes (exclusive of Ingoldian and aeroaquatic fungi) reported from the substrates on which freshwater ascomycetes occur. More information on this dataset can be found in the Freshwater Metadatabase - BFE_72 (http://www.freshwatermetadata.eu/metadb/bf_mdb_view.php?entryID=BFE_72).