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

USDA United States National Fungus Collections
Catalog #: BPI 990979
s.n.
Heterosporium gracile (Wallr.) Sacc.
Czech Republic

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0070948
J. Hruby #s.n. 00 August 1929
Heterosporium gracile (Wallr.) Sacc.
Czech Republic, Brünn in Mähren