H.W. Ravenel and M.C. Cooke [1-800, plu extras]

Cornell University Plant Pathology Herbarium
Catalog #: Rav.,F.Amer.0569
s.n.
Oidium
United States

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00061063
s.n.
Oidium erysiphoides Fr.
United States, South Carolina, Aiken;

USDA United States National Fungus Collections
Catalog #: BPI 1003030
s.n.
Oidium erysiphoides Fr.
United States

USDA United States National Fungus Collections
Catalog #: BPI 1003849
s.n.
Oidium erysiphoides Fr.
United States

USDA United States National Fungus Collections
Catalog #: BPI 1003850
s.n.
Oidium erysiphoides Fr.
United States

Academy of Natural Sciences of Drexel University
Catalog #: PH00310301
H. W. Ravenel #s.n.
Oidium erysiphoides Fr.
United States, South Carolina, Aiken, Aiken

USDA United States National Fungus Collections
Catalog #: BPI 409494
Ravenel H. W. s.n.
Oidium erysiphoides Fr.
United States, South Carolina, Aiken