Lasiodiplodia iraniensis is an endophytic fungus. It was first isolated in Mangifera indica, Eucalyptus and citrus species, Salvadora persica, Juglans species and Terminalia catapa in Iran. It has since been isolated in other plants in other continents, and is considered a plant pathogen. L. iraniensis is phylogenetically distinct from other species, but is closely related to L. theobromae; although conidia of L. iraniensis are smaller than the former. Dimensions of the conidia of L. iraniensis are similar to those of L. parva, but the subglobose conidia with rounded ends distinguish this species from L. parva.