Genus Aspergillus is a group of fungi that are commonly found in soil, air, and organic matter. This genus is known for its ability to produce a wide range of secondary metabolites, some of which have important industrial and pharmaceutical applications. Synonyms for Genus Aspergillus include Eurotium, Emericella, and Neosartorya. Eurotium was originally considered a separate genus, but molecular studies have shown that it is phylogenetically related to Aspergillus. Emericella is a teleomorph of Aspergillus, meaning that it is the sexual stage of the life cycle. Neosartorya was once considered a separate genus as well, but it was later discovered that it is closely related to Aspergillus.