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In this study, the diversity ofCurvulariaspecies from Iran was explored by integration of morphology and molecular data. Seventy-nineCurvulariaisolates were recovered from plant species with leaf spot symptoms. A phylogeny based on sequences of the ITS-rDNA region and the glyceraldehyde-3-phosphate dehydrogenase (GAPDH) gene clustered our isolates in 16 species clades within the genusCurvularia, viz.,C. americana,C. coatesiae,C. coicis,C. ellisii,C. eragrostidicola,C. geniculata,C. hawaiiensis,C. heteropogonicola,C. inaequalis,C. intermedia,C. mebaldsii,C. nicotiae,C. prasadii,C. spicifera,C. subpapendorfii, andC. tuberculata.Of those,C. coatesiae,C. eragrostidicola,C. geniculata,C. mebaldsii,C. nicotiae,C. prasadiiandC. subpapendorfiirepresent new records for the mycobiota of Iran.New hosts species are reported forC. americana,C. coatesiae,C. eragrostidicola,C. nicotiae,C. prasadiiandC. subpapendorfii.

In a taxonomic survey on the genusExserohilum(Pleosporales, Ascomycota) in Iran, leaf samples were collected from plant species with leaf spot symptoms. Monosporic fungal cultures were established using a spore dilution method.Exserohilumisolates were characterized based on a combination of morphological features and sequence data from the ITS+5.8S rDNA region. In this study we report three species ofExserohilumviz.Exserohilum rostratum,E. turcicumandE. monocerasamong whichE. monocerasis newly recorded for the mycobiota of Iran fromEchinochloa colonaandSetaria sp.Exserohilum turcicum is newly reported onSorghum halepense andPaspalum dilatatumin Iran; while, several new hosts are recorded forE. rostratum namelyAloe vera,S. bicolor,S. halepense,Oryza sativaandSaccharum officinarumin Iran.Setaria sp. andP. dilatatumare recorded as new hosts forE. monoceras andE. turcicumworldwide, respectively. We provide full descriptions and illustrations for each of the three species.