Ellis, N. Amer. Fungi
J.B. Ellis [1 - 1500, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 957637
s.n.
Peronospora halstedii Farl.
United States

USDA United States National Fungus Collections
Catalog #: BPI 188189
Bessey s.n.
Plasmopara halstedii (Farl.) Berl. & De Toni
United States, Iowa, Ames

University of Illinois Herbarium
Catalog #: ILL00097333
Bessey s.n.
Peronospora halstedii Farlow
United States, Iowa, Story, Ames; Ames

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0086981
Bessey s.n.
Peronospora halstedii Farlow
United States, Iowa, Story, Ames

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0253400
Bessey s.n.
Peronospora halstedii Farlow
United States, Iowa, Ames;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000227788
Bessey #209
Rhysotheca halstedii (Farl.) G.W. Wilson
USA, Iowa, Story, Ames

Academy of Natural Sciences of Drexel University
Catalog #: PH00300628
Bessey #209
Plasmopara halstedii (Farl.) G.W. Wilson
United States, Iowa, Story, Ames

Academy of Natural Sciences of Drexel University
Catalog #: PH00314306
Bessey #s.n.
Plasmopara halstedii (Farl.) Berl. & De Toni
United States, Iowa, Story, Ames

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062099
Prof. Bessey s.n.
Peronospora halstedii Farlow
United States, Iowa, Ames;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062116
Prof. Bessey s.n.
Peronospora halstedii Farlow
United States, Iowa, Ames;