Powdery Mildew Fungi: Classification and Ecology

Diagrams for Class Use

Key to Genera of Powdery Mildew Fungi
Appendages coiled or hooked at tip --- Uncinula
Appendages simple and straight with bulb-like base --- Phyllactinia
Appendages branching dichotomously at tip
    Cleistothecium contains a single ascus --- Podosphaera
    Cleistothecium contains several asci --- Microsphaera
Appendages simple or irregularly branched, often entwined
    Cleistothecium contains a single ascus --- Sphaerotheca
    Cleistothecium contains several asci --- Erysiphe

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Illustrated Key to Genera of Powdery Mildew Fungi

Generalized Life Cycle of Powdery Mildews

Powdery Mildew Data Recording Sheet
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