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

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0075755
F. Petrak #s.n. 08 October 1913
Petrakia echinata (Peglion) Syd. & P. Syd.
Czech Republic, Mähr-Weisskirchen: Podhorn