Carex limosa Linnaeus. Section: [26u] Section 15 Limosae. Mud Sedge. Phen: Jul-Aug. Hab: Bogs, swamps, wet meadows, medium to poor fens and bogs. Dist: Circumboreal, south in North America to se. PA (Dauphin County, Rhoads & Klein 1993; Rhoads & Block 2007), NJ, DE (historical), OH, IN, NE, UT, and CA. More commonly northward in a variety of medium to poor peatlands. This inherently northern species of peatland habitats does occur very sparingly southward to portions of our region. It is extirpated from DE and is now apparently extant in only one or a few location(s) each in NJ and OH; but locally abundant and probably S3 in PA (S. Grund, pers. comm., 2023). Carex limosa was likely never legitimately collected from s. IN and is considered S1 in the northern portions of the state (S. Namestnik, pers. comm., 2023).

Origin/Endemic status: Native

Synonymy: = C, F, FNA23, G, GrPl, K1, K3, K4, Mi, NE, NY, Pa, Tat, Mackenzie (1931-1935)

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: OBL
• Eastern Mountains and Piedmont: OBL
• Great Plains: OBL
• Midwest: OBL
• Northcentral & Northeast: OBL

Heliophily: 6