Carex fissa Mackenzie var. fissa . Section: [26c] Section 3 Multiflorae. Western Hammock Sedge. Phen: May-Jun. Hab: Prairie depressions, eastwards introduced in disturbed areas, including roadside ditches, sediment control ponds, and old railroad stockyards (well-established). Dist: S. IL, MO, se. KS, and OK south to AR, se. TX, and TAM. See Simmons, Strong, & Parrish (2008) for additional information about the VA occurrence, and Knapp et al. (2011) and Longbottom, Naczi, & Knapp (2016) about the MD and DE occurrences. McKenzie & Nelson (2022) discussed occurrences in MO.
Origin/Endemic status: Native
Synonymy: = Ar, FNA23, K1, K3, K4, Mo1; = n/a – C, Tat; < Carex fissa Mack. – ETx1, GrPl, Il, Mex, NcTx, Mackenzie (1931-1935)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
- Eastern Mountains and Piedmont: FACW (name change)
- Great Plains: OBL (taxonomic split from wetland indicator species)
- Midwest: FACW (taxonomic split from wetland indicator species)
Heliophily: 9
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