F.V. Bucholtz [1-700]
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Cornell University Plant Pathology Herbarium
Catalog #: F.rossici-0537
s.n.
Sphaerotheca humuli var. fuliginea (Schlecht.) Pers.
Russia
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USDA United States National Fungus Collections
Catalog #: BPI 947458
s.n.
Sphaerotheca humuli (DC.) Burrill
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Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP11551
O. Treboux s.n. 23 August 1914
Sphaerotheca humuli var. fuliginea (DC.) Burr.; ((Schl.) Salm.)
Latvia, Livonia, Kokenhusen
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0082767
O. Treboux #s.n. 00 August 1914
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
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