Most observed native powdery mildews
10 species, native to the US, by observations.
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Golovinomyces monardae
1,970 observations
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Golovinomyces verbenae
1,436 observations
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Peony Powdery Mildew
Erysiphe paeoniae
582 observations
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Golovinomyces hydrophyllacearum
227 observations
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Neoerysiphe chelones
201 observations
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Erysiphe eschscholziae
177 observations
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Erysiphe pulchra
72 observations
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Takamatsuella circinata
44 observations
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Erysiphe sydowiana
38 observations
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Erysiphe caryae
20 observations