J.T.C. Vestergren [1-1800, plus extras]

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0073575
s.n.
Microsphaera caraganae Magnus

USDA United States National Fungus Collections
Catalog #: BPI 1038160
s.n.
Microsphaera caraganae Magnus

USDA United States National Fungus Collections
Catalog #: BPI 564507
Magnus P. s.n. 16 August 1898
Erysiphe polygoni DC.
Germany, Marchia, Wannsee, near Berlin

University of Nebraska State Museum, C.E. Bessey Herbarium - Fungi
Catalog #: NEB00059683
P. Magnus s.n. 16 August 1898
Microsphaera caraganae Magnus
Germany, Germania: Marchia, Wannsee prope Berolinum