Intertaxon relationships
species
Powdery Mildew of Cucumber
Erysiphe cichoracearum DC.
Cichorium intybus L. - Chicory 
Citrullus lanatus (Thunb.) Matsum. & Nakai - Water Melon
Cucumis melo L. - Melon
Cucumis sativus L. - Cucumber
Cucurbita maxima Duchesne - Pumpkin
Cucurbita pepo L. - Marrow