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