Kaliwatan sa tanom nga patatas ang Convolvulus dregeanus.^[1] Una ning gihulagway ni Jacques Denys Denis Choisy.^[2] Ang Convolvulus dregeanus sakop sa kahenera nga Convolvulus, ug kabanay nga Convolvulaceae.^[1][3]

Kini nga matang hayop na sabwag sa:

• Habagatang Aprika
  • Gauteng
  • Mpumalanga (lalawigan)
  • Free State
  • Lalawigan sa Northern Cape
  • Province of the Western Cape
  • Eastern Cape

Walay nalista nga matang nga sama niini.^[1]

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: 53591152. Retrieved 2019-11-11. {{cite web}}: |author= has generic name (help)CS1 maint: multiple names: authors list (link)
2. ↑ Choisy (1845) , In: DC. Prod. 9: 411
3. ↑ Hassler M. (2019). World Plants: Synonymic Checklists of the Vascular Plants of the World (version Nov 2018). 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.