Specimens of microfungi are housed in the U.S. National Fungus Collections and other institutions that serve as reservoirs of information and documentation about the nation's natural heritage. Based on the number of species reported in the literature and those represented in the collections; the number of microfungi known in the United States is estimated at 29,000 species.
Microfungi specimens are kept in the U.S. National Fungus Collections and other institutions that preserve information about the nation's natural heritage. The number of identified species, based on literature reports and collections, suggests there are approximately 29,000 microfungi known in the United States.