Epilobium coloratum Biehler
Common Name: CINNAMON WILLOW-HERB
Coefficient of Conservatism: 3
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Like E. ciliatum, grows in a diversity of wet places, such as shores, stream banks, swamps (including tamarack), meadows, moist spots in forests, and ditches.

The seeds of E. coloratum are minutely papillose (as in most of its relatives), while in E. ciliatum the seeds are longitudinally striate, and this character may help with over-mature specimens when color of the hairs on the seeds may not be clear. The buds of E. coloratum are more abruptly contracted to distinct (sometimes spreading) sepal tips than is usual in E. ciliatum. This species also tends to flower and fruit later than E. ciliatum, with capsules dehiscing from late August to October, depending on latitude, season, and individual variation. Capsules of E. ciliatum may be found dehiscing as early as late June. In addition, E. coloratum is usually more bushy-branched.

Locations

Allegan County
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Crawford County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Monroe County
Montcalm County
Muskegon County
Newaygo County
Oakland County
Ogemaw County
Ontonagon County
Oscoda County
Ottawa County
Presque Isle County
Saginaw County
St. Clair County
Tuscola County
Van Buren County
Washtenaw County
Wayne County
Wexford County

Citation:

MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. December 12, 2017. http://michiganflora.net/species.aspx?id=1748.