Rosellinia convexa sp. nov. (Xylariales, Pezizomycotina) from China

A new species Rosellinia convexa from China is illustrated and described. Phylogenetic analysis based on internal transcribed spacer (ITS) region of nuclear ribosomal DNA (including ITS1, 5.8S rRNA gene and ITS2), β-tubulin gene, α-actin gene and Polymerase II second largest subunit (RPB2) gene sequence data confirmed that it differed from other species in this genus. On the basis of evidence from morphology, it differs from other Rosellinia species in having brown ascospores with convex umbilical ends and a larger ascal apical apparatus.