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

Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0072599
F. Petrak #s.n. 30 August 1913
Marssonina potentillae (Desm.) Magnus
Czech Republic, Mähr-Weisskirchen: Ludinabach