The fungal pathogens gathered under this group are documented across a wide range of unrelated crop hosts, or are most commonly discussed in the plant pathology literature by a broad descriptive disease name such as powdery mildew, downy mildew, gray mold, damping-off or Verticillium wilt rather than tied to one crop family the way a host-specific pathogen is. Several, including Botrytis cinerea, Rhizoctonia solani and the Fusarium oxysporum species complex, are among the most economically damaging plant pathogens precisely because of that broad host range, attacking field, orchard and glasshouse crops alike depending on local conditions and the specific strain involved. This group exists so a reader can find a pathogen by its own identity without this atlas assuming a single host crop the pathogen itself does not respect.