Rabenhorst, Fungi Eur. Exs.G.L. Rabenhorst [1-2600]
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USDA United States National Fungus Collections
Catalog #: BPI 998459
s.n.
Sphaerotheca castagnei Lév.
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0082791
R. Staritz #s.n. 00 October 1874
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
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