Iris lacustris Nutt.
Coefficient of Conservatism: 9
Coefficient of Wetness: 0
Wetness Index: FAC
Physiognomy: Nt P-Forb
Status: T

Moist sands, gravel, and limestone crevices, usually slightly shaded, at edges of conifers (cedar, fir) along the northern shores of Lakes Michigan and Huron. Particularly well developed on the rubble of old beach ridges, at such places as Wilderness State Park. An endemic Great Lakes species, it is known outside of Michigan only from Manitoulin Island and the Bruce Peninsula of Ontario and the Door Peninsula of Wisconsin. Formerly known from the vicinity of Milwaukee, Wisconsin, and Windsor, Ontario. This is Michigan’s state wildflower.


Alpena County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Only on Drummond Island
Delta County
Emmet County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Menominee County
Presque Isle County
Schoolcraft County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. November 29, 2022.