Cypripedium arietinum R. Br.
Common Name: RAM'S HEAD LADY-SLIPPER
Coefficient of Conservatism: 10
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb
Status: SC

In Michigan, thrives best on low dunes, in partial shade of fringing conifers, along the northern shores of Lakes Michigan and Huron and on Lake Superior (where it also occurs on thin soil over rock); inland, under jack pine and oak and also in coniferous swamps (cedar, tamarack, spruce, fir). Collected several times in Washtenaw County in the 1890's, but not since.

Locations

Alcona County
Alger County
Alpena County
Antrim County
Arenac County
Benzie County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Only on Drummond Island
Delta County
Emmet County
Houghton County
Iosco County
Isabella County
Keweenaw County
    Including Isle Royale
Leelanau County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Marquette County
Mason County
Menominee County
Midland County
Montmorency County
Ontonagon County
Oscoda County
Otsego County
Presque Isle County
Roscommon County
Washtenaw County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 13, 2017. http://www.michiganflora.net/species.aspx?id=1804.