Illinois Recorded in 23 populations in seven counties (Herkert & Ebinger 2002)
Indiana Recorded in 4 counties: Elkhart, LaGrange, Tippecanoe, White (INDNR 1999)
Iowa not much information available.
Michigan Recorded in 7 counties: Barry, Ionia, Jackson, Kalamazoo, Kent, St. Joseph, Van Buren.
Minnesota No counties recorded, but found at several sites including: Cowling Arboretum at Carleton College, Anoka Sand Plain State Natural Area, Big Woods, Southern Oak Barrens, Myre-Big Island State Park, and the Katharine Ordway Natural History Study Area in Dakota County
Ohio Presumed extirpated. Collected once in 1904 from Montgomery County (OHDNR 2001)
Wisconsin Recorded in 11 counties: Dane, Green, Jefferson, Pierce, Polk, Racine, Rock, St. Croix, Walworth, Washington, Waukesha (WIDNR 2002)
From 1-21 plants found at each site within the past 20 years (Wisconsin NHI 2001)