Ellis & Everhart, N. Amer. Fungi. Ser. II
J.B. Ellis ; B.M. Everhart [1501-3600, plus extras]

USDA United States National Fungus Collections
Catalog #: BPI 960344
s.n.
Oidium obductum Ellis & Langl.
United States

USDA United States National Fungus Collections
Catalog #: BPI 409692
Dearness J. s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, Ontario, London

University of Illinois Herbarium
Catalog #: ILL00100128
J Dearness s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, Ontario, Niagara; Niagara

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0089716
J Dearness s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, Ontario, Niagara

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00061103
J. Dearness s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, London;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00061104
J. Dearness s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, London;

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00061105
J. Dearness s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, London;

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0257242
J. Dearness s.n. 00 September 1892
Odium obductum
Canada, london;

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000229557
J. Dearness #2869 00 September 1892
Oidium obductum Ellis & Langl.
Canada, Ontario, London

University of Michigan Herbarium
Catalog #: 326573
J. Dearness #s. n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, Ontario, London.

Academy of Natural Sciences of Drexel University
Catalog #: PH00310312
J. Dearness #s.n. 00 September 1892
Oidium obductum Ellis & Langl.
Canada, Ontario, London