Based on results of extensive molecular phylogenetic analyses of five phylogenetically informative loci and previous morphological data, this work proposes to elevate all currently and newly described asexual species-groups of Alternaria to the taxonomic status of section. The infectoria species-group is not supported phylogenetically as Alternaria; therefore we do not propose to formalize this species-group as a section within Alternaria but instead suggest that further taxonomic revision of this group is necessary to eliminate the current polyphyly of the genus Alternaria.