Acanthocalycium

Taxonavigation

Taxonavigation: Caryophyllales
Classification System: APG IV Superregnum: Eukaryota Regnum: Plantae Cladus: Angiosperms Cladus: Eudicots Cladus: Core eudicots Ordo: Caryophyllales

Acanthocalycium Backeb. in C.Backeberg & F.M.Knuth, Kaktus-ABC: 224. (1936)

Heterotypic
- Spinicalycium Frič ex Kreuz., Verzeichnis Amer. Sukk. Revision Syst. Kakteen 36. 1935 [1], nom. inval.
  - Type species: Spinicalycium spiniflorum (K.Schum.) Kreuz., comb. inval.
- Trichocereus [infragen. unranked] Cylindricae Kreuz., Verzeichnis Amer. Sukk. Revision Syst. Kakteen 38. 1935 [2], nom. inval.
  - Type species: Trichocereus campylacanthus (Pfeiff. & Otto) Kreuz., nom. inval.

There are two possible names for the taxon Acanthocalycium glaucum. Either can be accepted as the evidence is not definitive.
Trichocereus marsoneri Frič ex Kreuz. (in Verzeichnis Amer. Sukk. Revision Syst. Kakteen 38. 1935 [3], nom. inval.), probably belong in this genus, but can not be exactly traced.

Native distribution areas:
Continental: Southern America Regional: Southern South America Argentina Northeast, Argentina Northwest, Bolivia, Brazil West-Central, Paraguay, Uruguay References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2^nd Edition

Hunt, D. 2016. CITES Cactaceae Checklist, ed. 3: 1–174. PDF. Reference page.
Korotkova, N., Aquino, D., Arias, S., Eggli, U., Franck, A. , Gómez-Hinostrosa, C., Guerrero, P.C., Hernández, H.M., Kohlbecker, A., Köhler, M., Luther, K., Majure, L.C., Müller, A., Metzing, D., Nyffeler, R., Sánchez, D., Schlumpberger, B. & Berendsohn, W.G. 2021. Cactaceae at Caryophyllales. org–a dynamic online species-level taxonomic backbone for the family. Willdenowia 51(2): 251–270. DOI: 10.3372/wi.51.51208 Reference page.

Govaerts, R. et al. 2025. Acanthocalycium in Kew Science Plants of the World Online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published online. Accessed: 2025 Jan. 6. Reference page.
Korotkova, N. et al. 2021. Acanthocalycium in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published online. Accessed: 2021 Nov. 12. Reference page.
International Plant Names Index. 2025. Acanthocalycium. Published online. Accessed: Jan. 6 2025. Reference page.
Tropicos.org 2025. Acanthocalycium. Missouri Botanical Garden. Published online. Accessed: 6 Jan. 2025. Reference page.
Hassler, M. 2025. Acanthocalycium. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2025. Species 2000 & ITIS Catalogue of Life. Published online. Accessed: 2025 Jan. 6. Reference page.