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

USDA United States National Fungus Collections
Catalog #: BPI 957635
s.n.
Peronospora obducens J. Schröt.

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062199
Halsted s.n.
Peronospora obducens J. Schröter
United States, Massachusetts, Bussey Brook

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00062202
Halsted s.n.
Peronospora obducens J. Schröter
United States, Massachusetts, Bussey Brook

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000227786
Halsted #207
Rhysotheca obducens (J. Schröt.) G.W. Wilson
United States, Massachusetts, Suffolk, Bussey Brook

University of Michigan Herbarium
Catalog #: 336055
Halsted #s. n.
Peronospora obducens J. Schröter
USA, Massachusetts, Bussey Brook

Academy of Natural Sciences of Drexel University
Catalog #: PH00300631
Halsted #s.n.
Plasmopara obducens (J. Schröt.) J. Schröt.
United States, Massachusetts, Suffolk, Bussey Brook

University of Illinois Herbarium
Catalog #: ILL00097331
Halsted & Farlow s.n.
Peronospora obducens J. Schröter
United States, Massachusetts, Suffolk, Bussey Brook; Bussey Brook

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0086979
Halsted & Farlow s.n.
Peronospora obducens J. Schröter
United States, Massachusetts, Suffolk, Bussey Brook

Academy of Natural Sciences of Drexel University
Catalog #: PH00314316
Halsted & Farlow #s.n.
Plasmopara obducens (J. Schrot.) J. Schrot.
United States, Massachusetts, Suffolk, Bussey Brook

USDA United States National Fungus Collections
Catalog #: BPI 784551
Halsted; Farlow s.n.
Plasmopara obducens (J. Schröt.) J. Schröt.
United States, Massachusetts, Bussey Brook

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0253398
Halsted; Farlow s.n.
Peronospora obducens J. Schröter
United States, Massachusetts, Suffolk, Bussey Brook