This research examined and reclassified an important group of plant-pathogenic fungi that commonly infect leaves of trees and other plants. The study used DNA analysis along with traditional methods of studying fungal characteristics to better understand how these fungi are related to each other and how they should be classified. This work helps scientists better understand and identify these plant pathogens, which is crucial for managing plant diseases they cause. Impacts on everyday life: • Improved ability to identify and monitor fungal pathogens that cause diseases in important trees and crops • Better understanding of host-specificity helps predict which plants may be susceptible to particular pathogens • More accurate classification systems help track the spread of plant diseases • Enhanced knowledge aids in developing disease management strategies • Provides foundation for future research on fungal evolution and plant-pathogen interactions