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

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0071963
F. Petrak #s.n. 02 October 1913
Leptostroma petrakii Bubák
Czech Republic, Mähr-Weisskrichen: Usti