Acanthocalycium

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Ordo: Caryophyllales

Familia: Cactaceae
Subfamilia: Cactoideae
Tribus: Cereeae
Subtribus: Trichocereinae
Genus: Acanthocalycium
Species: A. glaucum – A. leucanthum – A. rhodotrichum – A. spiniflorum – A. thionanthum
Source(s) of checklist:

Korotkova, N. et al. 2021. Acanthocalycium in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published on the internet. Accessed: 2021 Dec 06. Reference page.

Name

Acanthocalycium Backeb. (1936)

Type species: A. spiniflorum (K.Schum.) Backeb.

Synonyms

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.

Note:

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.

Hybrids

× Acanthinopsis
Distribution
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, 2nd Edition

References
Primary references

Backeberg, C. in Backeberg, C. & Knuth, F.M. 1936. Kaktus-ABC 224, 412.

Additional references

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 Open access Reference page.

Links

Govaerts, R. et al. 2021. Acanthocalycium in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Apr 16. 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 on the internet. Accessed: 2021 Nov> 12. Reference page.
International Plant Names Index. 2021. Acanthocalycium. Published online. Accessed: Apr 16 2021.
Tropicos.org 2021. Acanthocalycium. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Apr 16.
Hassler, M. 2021. 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. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 Apr 16. Reference page.

Vernacular names
العربية: برعوم شائك
فارسی: آکانتوکالیسیوم
hrvatski: okalicijum
മലയാളം: തോകാലിസിയം
русский: окалициум
українська: окаліціум

Acanthocalycium is a genus of cactus consisting of several species from Argentina. The taxon name comes from Greek akantha (meaning prickly) and kalyx (meaning buds), which refers to the spines on the floral tubes.[1]

These plants are globose to elongate, with numerous ribs on the spiny stems. Flowers range from white to pink to red and open during the day.
Taxonomy

Spinicalycium Fric (nom. inval.) has been brought into synonymy with this genus. Besides, the genus Acanthocalycium has been periodically included in the genus Echinopsis.
Species

Image	Scientific Name	Distribution
	Acanthocalycium ferrarii Rausch	Argentina.
	Acanthocalycium glaucum F.Ritter	Argentina
	Acanthocalycium klimpelianum (Weidlich & Werderm.) Backeb.	Argentina
	Acanthocalycium spiniflorum (K.Schum.) Backeb.	Argentina
	Acanthocalycium thionanthum (Speg.) Backeb.	Argentina

References

Eggli, U.; Newton, L.E. (2004). Etymological Dictionary of Succulent Plant Names. Springer Berlin Heidelberg. p. 1. ISBN 978-3-540-00489-9. Retrieved 20 September 2018.

Edward F. Anderson, The Cactus Family (Timber Press, 2001), pp. 105–106
Willy Cullmann, Erich Götz & Gerhard Gröner, The Encyclopedia of Cacti (Alphabooks, 1086). pp. 124–125