Circaea alpina L.
Common Name: SMALL ENCHANTER'S-NIGHTSHADE
Coefficient of Conservatism: 4
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb

Swamps (especially cedar), frequently on rotting logs; hardwood forests, especially in moist depressions, ravines, and springy slopes.

Usually a small delicate-looking species, occasionally as tall as 30 cm. Circaea canadensis is only very rarely as short as 30 cm. Circaea alpina blooms earlier than C. canadensis, with only a slight overlap in some seasons. The hybrid (C. ×sterilis Boufford), quite intermediate between the two (with ovaries aborting and highly sterile pollen), is likely to be mistaken for either parent, depending on size of the plant. It is very rare in Michigan and has been collected a few times in Marquette and Kent Cos.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Barry County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Houghton County
Ingham County
Ionia County
Iosco County
Iron County
Jackson County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Oscoda County
Ottawa County
Roscommon County
Schoolcraft County
Shiawassee County
St. Clair County
Van Buren County
Washtenaw County
Wayne County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 15, 2017. http://www.michiganflora.net/species.aspx?id=1745.