Juncus pelocarpus E. Mey.
Common Name: BROWN-FRUITED RUSH
Coefficient of Conservatism: 8
Coefficient of Wetness: -5
Wetness Index: OBL
Physiognomy: Nt P-Forb

Spreading by slender rhizomes on sandy, peaty, or mucky shores (or drying beds) of soft-water lakes and ponds, old bogs, etc. A plant of acidic sites.

Completely submersed vegetative plants may be locally abundant [f. submersus Fassett]; their rather flattened rosettes of reddish leaves are typically associated with Eriocaulon aquaticum, Littorella uniflora, and Myriophyllum tenellum. Emersed plants may have some or all of the flowers converted to viviparous bulblets. Juncus subtilis E. Mey. is known from Ontario north and east of Lake Superior, and could be found in Michigan. It would resemble a delicate, dwarfed and prostrate J. pelocarpus.

Locations

Alcona County
Alger County
Allegan County
Baraga County
Barry County
Berrien County
Cass County
Charlevoix County
    Only on Beaver Island
Cheboygan County
Chippewa County
Clare County
Crawford County
Delta County
Gogebic County
Houghton County
Iron County
Isabella County
Kalamazoo County
Kalkaska County
Kent County
Keweenaw County
    Only on Isle Royale
Lake County
Leelanau County
    Only on Manitou Islands
Luce County
Mackinac County
Macomb County
Manistee County
Marquette County
Mason County
Mecosta County
Missaukee County
Montcalm County
Muskegon County
Newaygo County
Oceana County
Ontonagon County
Otsego County
Presque Isle County
Roscommon County
Schoolcraft County
St. Clair 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 11, 2017. http://www.michiganflora.net/species.aspx?id=1519.