R. Ciferri [1-425, plus extras]

University of Wisconsin-Madison Herbarium
Catalog #: WIS-F-0056181
W. G. Solheim #5432 18 August 1957
Sphaerotheca humuli var. fuliginea (Schltdl.) E.S. Salmon
United States, Wyoming, North of Jackson Hole Biological Research Station, Grand Teton National Park