Phylogenetic delimitation of and .

In the present study six species of (including a new taxon, ) are described and subjected to phylogenetic analysis. The analysis of ITS and 28S rDNA, as well as sequences of and exons suggests that and represent independent lineages within . Morphologically, and do not seem to have clear diagnostic features, although species of often produce variously shaped conidia (navicular, fusoid, curved, polygonal, rounded), while most species of have rounded (face view) / lenticular (side view) conidia. Ecologically, most sequenced collections of were found on or in temperate, cold or alpine habitats, while those of were collected mainly on (but also many other plant host families) in a wide range of habitats, including tropical and subtropical regions. A lectotype for (syn.: , type species of ) is selected among the original collections preserved at the PC fungarium, and the putative identity of this taxon, found on in Mediterranean lowland habitats, is discussed. Fifty-five species of are combined to , and a key to species of is provided. Pintos Á, Alvarado P (2021). Phylogenetic delimitation of and . 197-221. doi: 10.3114/fuse.2021.07.10.