Taxa: Schoenoplectus purshianus, Schoenoplectus purshianus var. williamsii (Scirpus juncoides var. williamsii, Scirpus smithii var. williamsii), Schoenoplectus purshianus var. purshianus (Scirpus purshianus, Scirpus debilis, Scirpus hotarui, Schoenoplectus juncoides ssp. purshianus, Scirpus juncoides var.
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