Epilobium ciliatum Raf.
Common Name: WILLOW-HERB
Coefficient of Conservatism: 3
Coefficient of Wetness: -3
Wetness Index: FACW
Physiognomy: Nt P-Forb

Wet places generally: marshy, boggy, and swampy ground; ditches and swales; sandy and rocky shores; clearings and disturbed areas in cedar swamps and hardwood forests; seepy or periodically wet rock outcrops (including limestone crevices).

All Michigan specimens have been referred to subsp. ciliatum [= E. adenocaulon Hausskn.], and none to subsp. glandulosum (Lehm.) Hoch & Raven, a more northern taxon often reported from Michigan [as E. glandulosum]. Dwarf specimens, with a tendency to nod at the tip, from Drummond Island identified by P. A. Munz as E. leptocarpum var. macounii. have been identified by P. C. Hoch as E. ciliatum.

This common species is not always easy to distinguish from E. coloratum. Hybrids [E. ×wisconsinense Ugent] have been reported from Wisconsin, and a few Michigan collections are apparently this hybrid.

Locations

Alger County
Alpena County
Antrim County
Baraga County
Barry County
Bay County
Benzie County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Crawford County
Delta County
Eaton County
Emmet County
Gogebic County
Grand Traverse County
Gratiot County
Houghton County
Ingham County
Iron County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Leelanau County
    Including Manitou Islands
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Montmorency County
Oakland County
Oceana County
Ontonagon County
Oscoda County
Presque Isle County
Schoolcraft County
St. Clair 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=1747.