Cryptogamic Herbarium #7227
Department of Botany and Plant Pathology, Oklahoma Agriculture and Mech. College
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Wisconsin State Herbarium, Fungi
Catalog #: WIS-F-0056386
H. S. Jackson #s.n. 04 October 1933
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
Canada, Ontario, Toronto; Humber R.
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