Plant pathogenic fungi are each year responsible for billions of Euros in crop losses due to disease. They also play a similar important role in the rejection of agricultural products due to quarantine and phytosanitary export regulations. Characterization of plant pathogens is thus crucial not only for disease control, but also for quarantine officers aiming to make informed decisions about the rejection of shipments of agricultural and forestry products. The aim of this project is to provide a detailed description of the common genera of plant pathogenic fungi. It is envisaged that this project will result in the publication of a book that will provide the basis for plant pathogen identification, and also lead to the initiation of a course that can be taught to plant pathology students and quarantine officers worldwide.