H. Sydow and P. Sydow [1-3000]

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0074653
s.n.
Oidium cydoniae Pass.

USDA United States National Fungus Collections
Catalog #: BPI 1026917
s.n.
Oidium cydoniae Pass.
Germany

USDA United States National Fungus Collections
Catalog #: BPI 409377
Krieger W. s.n.
Oidium cydoniae Pass.
East Germany, Saxony (Sachsen), Koenigstein

USDA United States National Fungus Collections
Catalog #: BPI 409380
Krieger W. s.n.
Oidium cydoniae Pass.
East Germany, Saxony (Sachsen), Koenigstein

Cornell University, Plant Pathology Herbarium
Catalog #: Syd.,Myc.germ.1392
W. Krieger s.n.
Oidium cydoniae Pass.
Germany, Sachsen: Koenigstein

Miami University, Willard Sherman Turrell Herbarium
Catalog #: 000224030
W. Krieger #1392
Oidium cydoniae Pass.
Germany

University of Michigan Herbarium
Catalog #: 326514
W. Krieger #s. n. 00 June 1914
Oidium cydoniae Pass.
Germany, Sachsen, Königstein.

Academy of Natural Sciences of Drexel University
Catalog #: PH00323441
W. Krieger #s.n. 00 June 1914
Oidium cydoniae Pass.
Germany, Sachsen, Königstein.