| 🌵 Author(s) | Roy Mottram |
| 🌵 Basionym | Cactus kagenekii (1811) |
| 🌵 Basionym author(s) | Carl Christian Gmelin |
Named for German cactus enthusiast Count Karl Friedrich von Kageneck (1729-), who raised the species from seed for Gmelin.
Roy Mottram (Cactician 7. 2014) argues that the original spelling of the epithet, Kagenekii, is not correctable because the spelling with k instead of ck “appeared twice [in the protologue of the basionym], and thus was intentional and not a typographical error. Kagenek would have been the accepted 18thC latinised form, because the digraph ck is not used in Latin”. This argument does not hold. Although it is true that kagenekii cannot be regarded as a typographical error, an intentional spelling can still be a correctable orthographical error under article 60.1 of the International Code of Nomenclature (compare Turbinicarpus ×adornatus). The letter combination ki is not used in Latin either (in classical Latin, k was only used before a). In the absence of proof that Count von Kageneck spelled his own name as Kagenek, the epithet is correctable to kageneckii. Louis Pfeiffer used this spelling as early as 1837 (Cereus kageneckii).
Mabberley & Pallas (Taxon, 33(3): 433. 1984) erroneously claim that the original spelling was kagenickii. Britton & Rose (The Cactaceae 2, 1920) misspelled the epithet hageneckii.
Maarten H.J. van der Meer (2023 Jun 07). Haageocereus kageneckii. Dictionary of Cactus Names. Retrieved from https://www.cactusnames.org/haageocereus-kageneckii