Petrak, Fl. Bohem. Morav. Exs. PilzeF. Petrak [1-2575]
Wisconsin State Herbarium, Fungi
s.n.
Peronospora rumicis Corda
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USDA United States National Fungus Collections
Steppan, R. s.n. 00 May 1917
Peronospora rumicis Corda
Czechoslovakia, Theusing, Bernklau, Bohemia
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