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

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0066496
F. Petrak #s.n. 03 September 1923
Cercospora ariae Fuckel
Czech Republic, Hochgesenke: Ob. Mohratal.

USDA United States National Fungus Collections
Catalog #: BPI 437625
Petrak F. s.n. 03 September 1923
Cercospora kriegeriana Bres.
Czechoslovakia, Hruby Jesenik (Hochgesenke), Upper Moravice (Mohra) Valley