W. Siemaszko [1-200]
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Cornell University Plant Pathology Herbarium
Catalog #: Siem.,F.Bial.Exs.0189
s.n.
Marssonina piriformis (Riess) Magnus
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USDA United States National Fungus Collections
Catalog #: BPI 403937
Siemaszko W. s.n. 00 August 1922
Marssonina piriformis (Riess) Magnus
Poland, Puszcza Bialowieska Garden
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