W. Siemaszko [1-200]
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USDA United States National Fungus Collections
Catalog #: BPI 1022132
s.n.
Podosphaera tridactyla (Wallr.) de Bary
Poland
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USDA United States National Fungus Collections
Catalog #: BPI 603538
Siemaszko W. s.n. 20 August 1922
Podosphaera oxyacanthae var. tridactyla (Wallr.) E.S. Salmon
Poland, Puszcza, Bialowieska
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