J. Weese [1-800]
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USDA United States National Fungus Collections
Catalog #: BPI 1044203
s.n.
Sphaerotheca humuli (DC.) Burrill
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USDA United States National Fungus Collections
Catalog #: BPI 604475
Weese Jos. s.n. 00 September 1929
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
Czechoslovakia, Karlsbrunn, in Schlesien
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