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 960039
Dearness, J. s.n. 00 July 1890
Stagonospora petasitidis Ellis & Everh.
Canada, London

University of Illinois Fungarium - Fungi
Catalog #: ILL00099817
J Dearness s.n. 00 July 1890
Stagonospora petasitidis Ellis & Everh.
Canada, Ontario, London; London

Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0089413
J Dearness s.n. 00 July 1890
Stagonospora petasitidis Ellis & Everh.
Canada, Ontario, London