W. A. Tranzschel and J. Serebrianikow
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University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0077462
s.n.
Podosphaera oxyacanthae (DC.) de Bary
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USDA United States National Fungus Collections
Catalog #: BPI 1036740
s.n.
Podosphaera oxyacanthae (DC.) de Bary
Russia
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USDA United States National Fungus Collections
Catalog #: BPI 603493
Tranzschel W. s.n. 00 August 1910
Podosphaera oxyacanthae (DC.) de Bary
USSR, Kuuterselke, near Mustamaeki, Vyborg Prov.
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