Kaliwatan sa tanom nga balili ang Carex polystachya.^[1] Una ning gihulagway ni Olof Swartz ug Göran Wahlenberg.^[2] Ang Carex polystachya sakop sa kahenera nga Carex, ug kabanay nga Cyperaceae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Texas
• Peru
• Ecuador
• Venezuela
• Costa Rica
• Nicaragua
• Cuba
• amihanan-sidlakang & habagatan-kasadpang & habagatan-sidlakang & sentrong Mehiko
• Ondoras
• Dominikanhong Republika
• Haiti
• Jamaica
• Puerto Rico
• Leeward Islands
• Gulpo sa Mehiko
• Bolibiya
• Guyana
• amihanan-kasadpang Argentina
• Colombia
• Belize
• El Salvador
• Windward Islands
• Guatemala
• Panama

Ang kaliwatan gibahinbahin ngadto sa matang nga nahiubos:^[1]

• C. p. bartlettii
• C. p. polystachya

1. ↑ ^{1.0 1.1 1.2} Roskov Y., Kunze T., Orrell T., Abucay L., Paglinawan L., Culham A., Bailly N., Kirk P., Bourgoin T., Baillargeon G., Decock W., De Wever A., Didžiulis V. (ed) (2019). "Species 2000 & ITIS Catalogue of Life: 2019 Annual Checklist". Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X. TaxonID: 43171204. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Sw. ex Wahlenb. (1803) , In: Kongl. Vetensk. Acad. Nya Handl. 24: 149
3. ↑ Govaerts R. (ed). For a full list of reviewers see: http://apps.kew.org/wcsp/compilersReviewers.do (2019). WCSP: World Checklist of Selected Plant Families (version Aug 2017). In: Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist (Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds.). Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.