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

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0067477
F. Petrak #s.n. 10 July 1914
Coleosporium sonchi Lév.
Czech Republic, Tabor in Böhmen: Bot. Garten