USDA United States National Fungus Collections
s.n.
Erysiphe communis (Wallr.) Schltdl.
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USDA United States National Fungus Collections
s.n.
Erysiphe penicillata (Wallr.) Link
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USDA United States National Fungus Collections
s.n.
Sphaerotheca humuli (DC.) Burrill
England
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USDA United States National Fungus Collections
s.n.
Sphaerotheca pannosa (Wallr.) Lév.
Germany, Dresden
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Iowa State University, Ada Hayden Herbarium
#s.n.
Erysiphe cichoracearum DC.
Germany, Saxony, ad Dresdam [Dresden].
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