Cercosporoid hyphomycetes on hosts of the Annonaceae: Cercospora annonaceae and Isariopsis annonarum revisited

Type material of Cercospora annonaceae and several collections assigned to this species by C. Chupp have been re-examined. The status of this species as a member of the genus Stenella is confirmed, but most collections in Chupp´s herbarium referred to as C. annonaceae proved to be misidentified, and pertain to Isariopsis annonarum, herein reallocated to Pseudocercospora, and the new species Phacellium annonae-cherimoliae. A key to 23 cercosporoid hyphomycete species on hosts belonging to the Annonaceae is provided, and the taxonomy of the species concerned is briefly discussed. The following new combinations are proposed: Pseudocercospora annonarum, P. asiminae and P. oblecta. Furthermore, a revised, detailed description of Pseudocercospora annonae-squamosae is provided