W. A. Tranzschel and J. Serebrianikow
University of Wisconsin-Madison Herbarium
Serebrianikov #s.n. 00 August 1910
Sphaerotheca humuli (DC.) Burrill
Russian Federation, Berdicino, prov. Jaroslawl
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USDA United States National Fungus Collections
Serebrianikow s.n. 00 August 1910
Sphaerotheca humuli (DC.) Burrill
USSR, Berdicino, Jaroslawl Prov.
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USDA United States National Fungus Collections
Serebrianikow s.n. 00 August 1910
Sphaerotheca humuli (DC.) Burrill
Russia, Berdicino, Jaroslawl Prov.
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