Cryptogamic Herbarium #4232
Department of Botany and Plant Pathology, Oklahoma Agriculture and Mech. College
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Iowa State University, Ada Hayden Herbarium
Catalog #: ISC-F-0083716
H.S. Jackson s.n. 25 October 1932
Erysiphe cichoracearum DC.
Canada, Ontario, Toronto; Lake Shore, West of Humber, Toronto; 43.746086 -79.268352
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