W. A. Tranzschel and J. Serebrianikow
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USDA United States National Fungus Collections
Catalog #: BPI 1036636
s.n.
Sphaerotheca humuli (DC.) Burrill
Russia
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0082659
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
Catalog #: BPI 604879
Serebrianikow s.n. 00 August 1910
Sphaerotheca humuli (DC.) Burrill
USSR, Berdicino, Jaroslawl Prov.
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