W. A. Tranzschel and J. Serebrianikow

USDA United States National Fungus Collections
Catalog #: BPI 1036431
s.n.
Erysiphe tortilis (Wallr.) Link

USDA United States National Fungus Collections
Catalog #: BPI 563879
Tranzschel W. s.n. 14 September 1899
Erysiphe tortilis (Wallr.) Link
Poland, Willanow (Villa Nova), near Varsoviam

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0069908
W. Tranzschel #s.n. 14 September 1899
Erysiphe tortilis (Wallr.) Link
Poland, Polonia. Willanow (Villa nova) prope Varsoviam