Petrak, Mycoth. Carp.
Petrak, F. [1-475]
IndExs #641513049

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP38550
P. Petrak s.n. 00 August 1923
Peronospora sordida Berkeley
, Werd-Berkiden: ufer der Unt. Becws bei Rorman

USDA United States National Fungus Collections
Catalog #: BPI 791015
Petrak, F. s.n. 00 August 1923
Peronospora sordida Berk.
Czechoslovakia, West Beskids, Ufer