Corallorhiza maculata Raf.
Common Name: SPOTTED CORAL-ROOT
Coefficient of Conservatism: 5
Coefficient of Wetness: 3
Wetness Index: FACU
Physiognomy: Nt P-Forb

In forests of all kinds: conifers, hardwoods, mixed; moist or dry; from sandy oak-hickory or red pine to wet cedar-hemlock; often common in pine and spruce forests on old dunes as well as in beech-maple stands.

Two varieties occur in Michigan, the widespread var. maculata, with the middle lobe of the lip not or at most slightly expanded and floral bracts mostly 0.5–1 mm long, and var. occidentalis (Lindl.) Ames, found in the Upper Peninsula and northern Lower Peninsula, with the middle lobe of the lip clearly expanded and floral bracts mostly 1–2.8 mm long. Variety occidentalis flowers ca. 2–4 weeks earlier than var. maculata when they occur in the same region. In addition to the two varieties, several color forms occur; the most striking, occurring in the var. occidentalis, is all yellow but for the white lip (f. flavida (Peck) Farw.)

Locations

Alger County
Allegan County
Alpena County
Antrim County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Branch County
Calhoun County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clinton County
Crawford County
Delta County
Dickinson County
Eaton County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Ionia County
Iosco County
Iron County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Saginaw County
Sanilac County
Schoolcraft County
Shiawassee County
St. Clair County
St. Joseph 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 11, 2017. http://www.michiganflora.net/species.aspx?id=1799.