F. Petrak [1-2100]
USDA United States National Fungus Collections
s.n.
Oidium chrysanthemi Rabenh.
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USDA United States National Fungus Collections
Vogel P. s.n. 00 October 1926
Oidium chrysanthemi Rabenh.
Poland, formerly Germany Dabroszyn (Tamsel, Brandenburg) Castle Grounds
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