Carex opaca (F.J. Hermann) P.E. Rothrock & Reznicek. Section: [26q] Section 12 Ovales. Opaque Sedge. Phen: Apr-Jul. Hab: Prairies, eastwards in disturbed areas, such as introduced at old railroad livestock yard and well-established. Dist: IL, MO, and KS south to MS, AR, and OK.
Origin/Endemic status: Native
Synonymy: = Ar, FNA23, Il, K3, K4; = Carex bicknellii Britton var. opaca F.J.Herm. – K1, Mo1; = n/a – RAB; < Carex bicknellii Britton – C, Mackenzie (1931-1935)
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: FACW
- Eastern Mountains and Piedmont: FACW
- Great Plains: FACW
- Midwest: FACW
Heliophily: 9
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