USDA United States National Fungus Collections
Ristow, M. s.n. 01 November 2012
Podosphaera parietariae (Schwarzman) U. Braun & S. Takam.
Germany, Berlin-Schoneberg, Eisenacher Strabe corner Luitpoldstrabe shrubbery, on leaves of Parietaria pensylvanica
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