Distribution of Alternaria species among sections. 2. Section Alternaria

Among several groups of small-spored Alternaria species, A. sect.Alternaria (containing the generic type) has been found to be isolated, based on phylogenetic as well as morphological data.Molecular phylogenetic data confirm inclusion of twenty-one species in this section besides the type species.Examination of additional material, conforming to the morphological description for the section but not as yet phylogenetically characterized, allow confirmation of an additional 37 species.All 59 species are listed, and an emended description of Alternaria sect.Alternaria is presented.