Juncus balticus Willd.
Common Name: RUSH
Coefficient of Conservatism: 4
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Juncus balticus stems in line A. A. Reznicek stems in line

Especially characteristic of wet sandy (to gravelly or marly) shores and moist flats between dunes along the Great Lakes and inland lakes, but also in marshy situations of all kinds, ditches, etc. Somewhat salt tolerant, and occasional in saline areas along freeways.

The straight rhizomes develop extensively in sand, with evenly spaced stems arising in conspicuous rows. Often subsumed into a broadly circumscribed Juncus arcticus, but we follow Snogerup, Zika, & Kirschner (2002) in keeping J. balticus distinct. Our plants are J. balticus subsp. littoralis (Engelm.) Snogerup.


Alcona County
Alger County
Allegan County
Alpena County
Antrim County
Arenac County
Baraga County
Bay County
Benzie County
Berrien County
Charlevoix County
    Including Beaver Island
Cheboygan County
Chippewa County
    Including Drummond Island
Crawford County
Delta County
Emmet County
Gogebic County
Grand Traverse County
Houghton County
Huron County
Ionia County
Iosco County
Kalamazoo County
Kent County
Keweenaw County
Lake County
Lapeer County
Leelanau County
    Including Fox Islands
    Including Manitou Islands
Lenawee County
Livingston County
Mackinac County
    Including Bois Blanc, Mackinac, Round Islands
Manistee County
Marquette County
Mason County
Menominee County
Missaukee County
Muskegon County
Newaygo County
Oakland County
Oceana County
Ottawa County
Presque Isle County
Roscommon County
Schoolcraft County
St. Clair County
St. Joseph County
Van Buren County
Washtenaw County
Wayne County
Wexford County


MICHIGAN FLORA ONLINE. A. A. Reznicek, E. G. Voss, & B. S. Walters. February 2011. University of Michigan. Web. April 22, 2021. https://michiganflora.net/species.aspx?id=1501.