In previous studies Apiculospora was introduced in Leotiomycetes genera incertae sedis. With our phylogenetic analyses based on large subunit rDNA (LSU) and internal transcribed spacer (ITS1, 5.8S, ITS2), we transfer Apiculospora to Pezizellaceae (Rhytismatales). We introduce Apiculospora penniseti from Pennisetum purpureum. Apiculospora penniseti differs from the closely related A. spartii by the presence of clear apiculi at both apices of the smooth-walled ascospores. Apiculospora penniseti is phylogenetically distinct from A. spartii with moderate support and high BYPP support (69 RAxML/0.97 BYPP). Herein, we discuss the taxonomy and phylogeny of A. penniseti.
Tag: leotiomycetes
Rhexocercosporidium camporesii sp. nov. (Ploettnerulaceae, Helotiales) from Italy
A new species, Rhexocercosporidium camporesii was collected from dead branches of Scabiosa maritima (Caprifoliaceae) in Forlì-Cesena, Italy. The new species is characterized by a lack of setae surrounding the apothecia and by fusiform, aseptate ascospores containing multiple guttules. Rhexocercosporidium camporesii has larger asci and ascospores than other species of Rhexocercosporidium. Phylogenetic analyses using a combined gene analysis of LSU and ITS sequence data indicated that the new species belongs to Ploettnerulaceae (Helotiales). A detailed morphological description and illustration of the new species are provided.