Weiss, Herb. PatholJ.E. Weiss; R. Staritz [1-200]
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USDA United States National Fungus Collections
Catalog #: BPI 1044812
s.n.
Oidium crataegi Grognot
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Brown University Herbarium
Catalog #: CBRU00010697
R Staritz s.n. 22 July 1920
Oidium crataegi Grognot
Germany, Dessau;
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