You selected Bolboschoenus robustus var. capitatus Tatanov. This is a synonym for:

Accepted scientific name:
Bolboschoenus robustus (Pursh) Soják (accepted name) 1 literature reference for Bolboschoenus robustus (Pursh) Soják
Synonyms:
Bolboschoenus robustus var. capitatus Tatanov (synonym) 1 literature reference for Bolboschoenus robustus var. capitatus Tatanov
Schoenoplectus robustus (Pursh) M.T.Strong (synonym) 1 literature reference for Schoenoplectus robustus (Pursh) M.T.Strong
Scirpus maritimus var. macrostachyus Michx. (synonym) 1 literature reference for Scirpus maritimus var. macrostachyus Michx.
Scirpus maritimus var. robustus (Pursh) Kük. (synonym) 1 literature reference for Scirpus maritimus var. robustus (Pursh) Kük.
Scirpus robustus Pursh (synonym) 1 literature reference for Scirpus robustus Pursh
Scirpus robustus var. compactus Burtt Davy (synonym) 1 literature reference for Scirpus robustus var. compactus Burtt Davy
Scirpus robustus forma protrusus Fernald (synonym) 1 literature reference for Scirpus robustus forma protrusus Fernald
Common names: -
Classification:
Plantae
Phylum Magnoliophyta
Class Liliopsida
Order Poales
Family Cyperaceae
Genus Bolboschoenus
Distribution: S. & E. U.S.A. to Mexico, Caribbean to S. Trop. America
Additional data: -
Source database: World Checklist of Selected Plant Families, 27 Nov 2009
Latest taxonomic scrutiny: Govaerts R., 21-Jun-2005
Online resource: http://apps.kew.org/wcsp/namedetail.do?accepted_id=221927&repSynonym_id=-9998&name_id=221927&status=true
CoL taxon LSID: urn:lsid:catalogueoflife.org:taxon:25f77222-60a7-102d-be47-00304854f810:ac2010