Kaliwatan sa balili ang Elymus nodosus.^[1] Una ning gihulagway ni Christian von Steven ug August Heinrich Rudolf Grisebach, ug gihatagan sa eksakto nga ngalan ni Aleksandre Melderis.^[2] Ang Elymus nodosus sakop sa kahenera nga Elymus, ug kabanay nga balili.^[1][3]

Kini nga matang hayop na sabwag sa:

• Corse
• Krym
• Pakistan
• Transcaucasus
• Turkeya
• Iran
• Iraq

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

• E. n. caespitosus
• E. n. corsicus
• E. n. dorudicus
• E. n. gypsicola
• E. n. nodosus
• E. n. platyphyllus
• E. n. sinuatus

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: 43323533. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Melderis (1978) , In: Bot. J. Linn. Soc. 76: 376
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.