J.B. Ellis, B.M. Everhart, and E. Bartholomew [1501-5100, plus extras]

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00065707
C. A. Ludwig s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette;

Chrysler Herbarium - Mycological Collection
Catalog #: CHRB-F-0016395
C. A. Ludwig s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, Tippecanoe, West Lafayette;

University of California Berkeley, University Herbarium
Catalog #: UC1464536
C. A. Ludwig s.n. 07 August 1915
Podosphaera clandestina (Wallr.) Lév.
USA, Indiana, West Lafayette

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000281527
C. A. Ludwig #4748 07 August 1915
Podosphaeria oxyacanthae
United States, Indiana, Tippecanoe

Field Museum of Natural History
Catalog #: C0286138F
2d952555-aee4-45dc-b8da-d5c9a746a260
C. A. Ludwig #s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary (DC.) de Bary
U.S.A., Indiana, Tippecanoe, West Lafayette; West Lafayette

Cornell University Plant Pathology Herbarium
Catalog #: F.Columbiani-4748
C.A. Ludwig s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, Tippecanoe, Lafayette; West Lafayette

Charles Gardner Shaw Mycological Herbarium, Washington State University
Catalog #: WSP5900
C.A. Ludwig s.n. 07 August 1915
Podosphaera oxycanthae
United States, Indiana, Tippecanoe, West Lafayette

Michigan State University Herbarium non-lichenized fungi
Catalog #: MSC0251483
C.A. Ludwig s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette;

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0032822
C.A. Ludwig #s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette

Brown University Herbarium
Catalog #: CBRU00001679
CA Ludwig s.n. 07 August 1915
Podosphaeria oxyacanthae
United States, Indiana, Tippecanoe, West Lafayette;

Purdue University, Kriebel Herbarium
Catalog #: PUL00021529
CA Ludwig s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, Tippecanoe, West Lafayette;

USDA United States National Fungus Collections
Catalog #: BPI 603188
Ludwig C. A. s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette

USDA United States National Fungus Collections
Catalog #: BPI 603243
Ludwig C. A. s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette

USDA United States National Fungus Collections
Catalog #: BPI 966910
Ludwig C. A. #s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette

USDA United States National Fungus Collections
Catalog #: BPI 967010
Ludwig C. A. #s.n. 07 August 1915
Podosphaera oxyacanthae (DC.) de Bary
United States, Indiana, West Lafayette