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

USDA United States National Fungus Collections
Catalog #: BPI 619244
Petrak J. s.n. 03 October 1912
Valsaria durissima (Fuckel) Sacc.
Czechoslovakia, Hranice (Maehr.-weisskirchen) Military School Park