Scirpus atrovirens Willd.
Common Name: BULRUSH
Coefficient of Conservatism: 3
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Sedge

Wet, sunny ground generally: marshes, shores, ditches, wet meadows and thickets, wet openings in swamps of all kinds, and other, mostly permanently wet, open ground. Scirpus atrovirens, and the other species in the complex, S. hattorianus and S. georgianus seem to occur in a wide range of wetlands, and seem indifferent to soils and pH. Nearly mature fruit, and sampling a number of achenes to check for the typical bristle number and length are very helpful for correct determinations.

Locations

Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Barry County
Bay County
Benzie County
Berrien County
Calhoun County
Cass County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Only on Drummond Island
Clinton County
Delta County
Eaton County
Emmet County
Genesee County
Gogebic County
Grand Traverse County
Gratiot County
Hillsdale County
Houghton County
Ingham County
Ionia County
Iosco County
Isabella County
Jackson County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
Lake County
Lapeer County
Leelanau County
    Including Manitou Islands
Lenawee County
Livingston County
Luce County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Mason County
Mecosta County
Menominee County
Midland County
Missaukee County
Monroe County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ogemaw County
Ontonagon County
Otsego County
Ottawa County
Presque Isle County
Roscommon County
Saginaw 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 15, 2017. http://michiganflora.net/species.aspx?id=1152.