The genus Chaetomium comprises between 80 and 100 species, depending on the consulted documents: taxonomic data vary greatly for this genus {3318}. Chaetomium globosum is the best known and studied species {767}. Some of the most common ones are Chaetomium atrobrunneum, Chaetomium funicola, Chaetomium globosum, and Chaetomium strumarium.