Scirpus cyperinus (L.) Kunth
Common Name: WOOL-GRASS
Coefficient of Conservatism: 5
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Sedge

Wet meadows and thickets, bogs, shores of lakes and streams, marshes, ditches, openings in swamps.

Our commonest species of Scirpus. Inflorescences are fully expanded by late July and achenes are ripe from late August through October. Plants with bracts and scales blackish green are occasional individuals of S. atrocinctus with congested inflorescences or presumed hybrids between S. atrocinctus and S. cyperinus.

Locations

Alcona County
Alger County
Allegan County
Antrim County
Arenac County
Baraga County
Barry County
Bay County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
Clinton County
Crawford County
Dickinson County
Eaton County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Houghton County
Huron County
Ingham County
Ionia 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
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
Manistee County
Marquette County
Mason County
Mecosta County
Menominee County
Midland County
Missaukee County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ontonagon County
Otsego County
Ottawa County
Roscommon County
Saginaw County
Sanilac County
Schoolcraft County
St. Clair County
St. Joseph 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 17, 2017. http://michiganflora.net/species.aspx?id=1153.