F.K.A.E.J. de Thümen [1-2300, plus extras]
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University of Illinois Herbarium
Catalog #: ILL00076636
de Heldreich s.n.
Oidium erysiphoides Fr.
Greece, Athens; Athens
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University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00061066
de Heldreich s.n.
Oidium erysiphoides Fr.
Greece, Athens;
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Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0012628
De Heldreich s.n.
Oidium crysiphoides
Greece
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USDA United States National Fungus Collections
Catalog #: BPI 409537
Heldreich de s.n.
Oidium erysiphoides Fr.
Greece, Athens
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USDA United States National Fungus Collections
Catalog #: BPI 1035102
Heldreich de s.n.
Oidium erysiphoides Fr.
Greece, Athens
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