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

USDA United States National Fungus Collections
Catalog #: BPI 786780
Hruby, J. s.n. 00 June 1913
Peronospora arborescens (Berk.) de Bary
Czechoslovakia, Weidenau, O. Schlesien