Ascomyceten #1100 B
Rehm, Ascomyc.
H. Rehm [1-2175, plus extras]

Cornell University, Plant Pathology Herbarium
Catalog #: CUP-F-2044
John Dearness #3179 00 October 1910
Podosphaera biuncinata Cooke & Peck
Canada, Ontario, Middlesex, London;