Petrak, Crypt. Exs.F. Petrak [3201- 4700]
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USDA United States National Fungus Collections
Catalog #: BPI 1042399
s.n.
Erysiphe horridula (Wallr.) Rabenh.
Hungary
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Field Museum of Natural History
Catalog #: C0285588F
4b720c98-e4c3-4b06-97c3-eb88d0ea81d6
J. Dorfler #s.n.
Erysiphe horridula (Wallr.) Rabenh. (Wallr.) Rabenh.
Austria, Salzburg
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