Oreocereus

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: Oreocereus
Species: O. australis – O. celsianus – O. doelzianus – O. fossulatus – O. hempelianus – O. hendriksenianus – O. leucotrichus – O. ritteri – O. tacnaensis – O. trolli – O. varicolor
Source(s) of checklist:

Korotkova, N. et al. 2021. Oreocereus in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published on the internet. Accessed: 2021 Nov 03. Reference page.

Name

Oreocereus (A.Berger) Riccob. (1909)

Type species: O. celsianus (Salm-Dyck) Riccob.

Synonyms

Basionym
Cereus subg. Oreocereus A.Berger, Rep. (Annual) Missouri Bot. Gard. 16: 64 (1905).

Heterotypic
Arequipa Britton & Rose, Cactaceae 3: 100 (1922).
Type species: Arequipa leucotricha (Phil.) Britton & Rose
Arequipiopsis Kreuz. & Buining, Repert. Spec. Nov. Regni Veg. 50: 195, 198 (1941).
Type species: Arequipiopsis hempeliana (Gürke) Kreuz. & Buining
Echinocactus [infragen.gruppe] Myriacanthi Vaupel in Engl. & Prantl, Nnat. Pflanzenfam. 21: 623, 626 (1925).
Type species: Echinocactus leucotrichus Phil.
× Moraquipa Rüd.Baumgärtner, Hybriden-J. 2012(2): 18 (2012).
Formula hybridae: Arequipa Britton & Rose × Morawetzia Backeb.
Morawetzia Backeb., Jahrb. Deutsch. Kakteen-Ges. 1: 73, fig. 1936.
Type species: Morawetzia doelziana Backeb.

Hybrids

× Callisonara – × Oreocana – × Oreonopsis
Distribution
Native distribution areas:

Continental: Southern America
Regional: Western South America
Andes of S-Peru, S-Bolivia, N-Chile, and N-Argentina

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Riccobono, V. (1909) Boll. Reale Orto Bot. Giardino Colon. Palermo 8: 258.

Additional references

Govaerts, R., Nic Lughadha, E., Black, N., Turner, R. & Paton, A. 2021. The World Checklist of Vascular Plants, a continuously updated resource for exploring global plant diversity. Scientific Data 8, Article number 215. DOI: 10.1038/s41597-021-00997-6 Reference page.
Farr, E. R. & Zijlstra, G. eds. (1996-) Index Nominum Genericorum (Plantarum). 2010 Mar 11 [1].
Hunt, D.R., Taylor, N. & Charles, G. (ed.) (2006) The New Cactus Lexicon. Milborne Port. ISBN 0-9538134-4-4.
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

Korotkova, N. et al. 2021. Oreocereus in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published on the internet. Accessed: 2021 Nov 10. Reference page.
Hassler, M. 2021. World Plants. Synonymic Checklist and Distribution of the World Flora. . Oreocereus. Accessed: 03 Nov 2021.
International Plant Names Index. 2021. Oreocereus. Published online. Accessed: Nov 03 2021.
Tropicos.org 2021. Oreocereus. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Nov 03.
Govaerts, R. et al. 2021. Oreocereus in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Nov 03. Reference page.
Korotkova, N. et al. 2021. Oreocereus in Cactaceae at Caryophyllales.org. A global synthesis of species diversity in the angiosperm order Caryophyllales. Published on the internet. Accessed: 2021 Nov 03. Reference page.

Vernacular names
العربية: اسپندارهای کوهی
suomi: Seittikaktukset
svenska: Bergkaktussläktet

Oreocereus is a genus of cacti (family Cactaceae), known only from high altitudes of the Andes. Its name means "mountain cereus", formed from the Greek prefix oreo- (ὀρεο-, mountain)[1] and the New Latin cereus, meaning wax or torch.

As they are covered with woolly white fuzz (modified spines), a few species in this genus are sometimes known as the old-man cactus,[2][3] a generic name that also refers to Cephalocereus senilis or Espostoa lanata. More rarely, the old man of the mountain is also used for some species.[nb 1]
Synonymy

The following genera have been included in this genus:

Arequipa Britton & Rose
Arequipiopsis Kreuz. & Buining
Morawetzia Backeb.
Submatucana Backeb.

References

“[...] hairy cacti in cultivation include: golden old man (C. chrysacanthus), old woman (Mammillaria hahniana), Chilean old lady (Neoporteria senilis), and old man of the mountain (Borzicactus trollii).”[4] [emphasis added, B. trollii being an old name for O. trollii].[5]

"oreography". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
University of Vermont, Indoor Plants
Barry Walker; Huw Lloyd (2007). Peruvian Wildlife: A Visitor's Guide to the Central Andes. Bradt Travel Guides. p. 23. ISBN 978-1-84162-167-8.
Encyclopædia Britannica (1991), entry ‘old-man cactus’.
D. J. Mabberley (2008-05-01). Mabberley's Plant-book: A Portable Dictionary of Plants, Their Classifications, and Uses. Cambridge University Press. p. 608. ISBN 978-0-521-82071-4.