F.K.A.E.J. de Thümen [1-2300, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 1035039
s.n.
Peronospora pygmaea (Unger) Unger

University of Illinois Herbarium
Catalog #: ILL00076573
Ch. H. Peck s.n.
Peronospora pygmaea (Unger) Unger
USA, New York, Albany; Albany

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP35688
Ch. H. Peck s.n.
Peronospora pygmaea f. anemones-pensylvanicae de By.; (de Thumen)
United States, New York, Albany, Albany

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062313
Ch. H. Peck s.n.
Peronospora pygmaea (Unger) Unger
United States, New York, Albany;

USDA United States National Fungus Collections
Catalog #: BPI 784956
Peck, Ch. H. s.n.
Plasmopara pygmaea (Unger) J. Schröt.
United States, New York, Albany