Erysiphe aquilegiae
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columbine infected by Erysiphe aquilegiae var. ranunculi (click on image to enlarge it)
Author(s): Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State University
Source: IPM IMAGES
Author(s): Penn State Department of Plant Pathology & Environmental Microbiology Archives, Penn State University
Source: IPM IMAGES
Erysiphe aquilegiae DC. 1815
The fungus is widely distributed and causes powdery mildew diseases on columbines (Aquilegia) and other ornamentals. Both sides of the leaves are affected. E. aquilegiae forms lobed appressoria. Conidia are cylindrical to elliptical and produced singly with a size of around 40-50 x 15-20 µm. Ascospores are ellipsoid and about 20-25 µm long.
Synonyms:
Erysiphe ranunculi (= Erysiphe aquilegiae var. ranunculi)
