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

USDA United States National Fungus Collections
Catalog #: BPI 562167
Trimble Wm. s.n.
Erysiphe communis (Wallr.) Schltdl.
United States, Pennsylvania, Delaware Co.

USDA United States National Fungus Collections
Catalog #: BPI 958265
Trimble Wm. s.n.
Erysiphe communis (Wallr.) Schltdl.
United States, Pennsylvania, Delaware Co.

University of Illinois Herbarium
Catalog #: ILL00098018
W Trimble s.n.
Erysiphe communis var. delphinii
United States, Pennsylvania, Delaware, Delaware County

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0087566
W Trimble s.n.
Erysiphe communis var. delphinii
United States, Pennsylvania, Delaware, Delaware County

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000247241
W. Trimble #835
Erysiphe communis var. delphinii Lev.
United States, Pennsylvania, Delaware

Academy of Natural Sciences of Drexel University
Catalog #: PH00302465
W. Trimble #s.n.
Erysiphe communis (Wallr.) Schltdl.
United States, Pennsylvania, Delaware, Delaware County

Academy of Natural Sciences of Drexel University
Catalog #: PH00315439
W. Trimble #s.n.
Erysiphe ranunculi Grev.
United States, Pennsylvania, Delaware, Delaware County

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0254072
Wm. Trimble s.n.
Erysiphe communis (Wallr.) Schltdl.
United States, Pennsylvania, Delaware

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00052329
Wm. Trmble s.n.
Erysiphe communis var. Delphinii
United States, Pennsylvania, Delaware

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00052346
Wm. Trmble s.n.
Erysiphe communis (Wallr.) Schltdl.
United States, Pennsylvania, Delaware