Carex opaca (F.J. Hermann) P.E. Rothrock & Reznicek. Section: [26q] Section 12 Ovales. Phen: Apr-Jul. Hab: Prairies, eastwards in disturbed areas, such as introduced at old railroad livestock yard and well-established. Dist: Native of sc. United States. IL and KS south to MS, AR, and OK.
Origin/Endemic status: Native
Syn: = Ar, FNA23, K3, K4; = Carex bicknellii var. opaca – K1, Mo1; < Carex bicknellii – Mackenzie (1931-1935)
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