Schoenoplectus pungens (Vahl) Palla var. longispicatus (Britton) S.G. Smith. Western Three-square. Hab: Marshes, fens. Dist: ON, NT, and BC south to TX, NM, AZ, CA, and Mexico.
Origin/Endemic status: Native
Synonymy: = C, FNA23, K3, K4, Mo1; = Scirpus americanus Pers. var. longispicatus Britton – Tx; < Schoenoplectus pungens (Vahl) Palla – ETx1, Mex, NcTx; < Scirpus americanus Pers. – F; < Scirpus pungens Vahl – GrPl
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