Eutrochium maculatum (L.) E. E. Lamont
Common Name: JOE-PYE-WEED
Synonym: Eupatorium maculatum
Coefficient of Conservatism: 4
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Eupatorium maculatum of Michigan Flora.

Marshes, meadows, swales, wet prairies and fields, shores, bogs and fens, cedar swamps, thickets, moist clearings and roadsides, moist hollows, borders of lakes and streams.

The heads are rarely white [f. faxonii Fernald]; such plants have been collected in Bay, Ontonagon, and Washtenaw Cos. Our common plant, found throughout, is var. maculatum, with stems sparsely puberulent to more or less glabrous. The western var. bruneri (A. Gray) E. E. Lamont, with stems densely puberulent throughout, is found in the Keweenaw Co. mainland and Isle Royale, and the more eastern var. foliosum (Fernald) E. E. Lamont, with large uppermost stem leaves equaling or surpassing the heads, is scattered in the Upper Peninsula.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
    Including Charity Island
Baraga County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Clare County
Clinton County
Crawford County
Delta County
Dickinson County
Emmet County
Genesee County
Gladwin County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Huron County
Ingham County
Ionia County
Iosco County
Iron County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Including Isle Royale
Lake County
Lapeer County
Leelanau County
    Including Fox 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
Menominee County
Midland County
Missaukee County
Monroe County
Montcalm County
Montmorency County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Oscoda County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Sanilac County
Schoolcraft County
St. Clair County
St. Joseph County
Tuscola 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. September 23, 2017. http://michiganflora.net/species.aspx?id=330.