Petrak, Fl. Bohem. Morav. Exs. Pilze
F. Petrak [1-2575]

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0075375
F. Petrak #s.n. 28 July 1924
Peronospora effusa (Greville) Rabenhorst
Czech Republic, Mähr-Weisskirchen. Garten