Soehrensia spachiana

Life-forms

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: Soehrensia
Species: Soehrensia spachiana
Name

Soehrensia spachiana (Lem.) Schlumpb. (2012)
Synonyms

Cereus spachianus Lem., Hort. Universel 1: 225. 1839 syn. sec. Schlumpberger 2012
Echinocereus spachianus (Lem.) Rümpler, Handb. Cacteenk., ed. 2: 827. 1885 syn. sec. Britton & Rose 1920
Trichocereus spachianus (Lem.) Riccob. in Boll. Reale Orto Bot. Giardino Colon. Palermo 8: 237. 1909 syn. sec. ???
Echinopsis spachiana (Lem.) H.Friedrich & G.D.Rowley in I.O.S. Bull. 3(3): 98. 1974 syn. sec. ???
Cereus santiaguensis Speg. in Anales Mus. Nac. Buenos Aires, ser. 3, 4: 478. 1905 syn. sec. Britton & Rose 1920
Trichocereus santiaguensis (Speg.) Backeb., Cactaceae 2: 1107. 1959 syn. sec. Tropicos
Echinopsis santiaguensis (Speg.) H.Friedrich & G.D.Rowley in I.O.S. Bull. 3(3): 97. 1974 syn. sec. Kew WCVP (2019)

Distribution
Native distribution areas:

Continental: Southern America
Regional: Western South America
Argentina Northwest, Bolivia
Introduced into:
Canary Is., Cape Provinces, Free State, Lesotho, Northern Provinces, Sicilia, Spain

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

Schlumpberger, B.O. 2012. Cactaceae Syst. Init. 28: 31.

Additional references

Anderson, E.F. 2001. The Cactus Family (Timber Press) ISBN 0-88192-498-9
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. Soehrensia spachiana 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. 2021. Soehrensia spachiana. Published online. Accessed: Nov 12 2021. Reference page.
Tropicos.org 2021. Soehrensia spachiana. Missouri Botanical Garden. Published online. Accessed: 12 Nov 2021.
Hassler, M. 2021. Soehrensia spachiana. 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 online. Accessed: 2021 Nov 12. Reference page.
USDA, ARS, Germplasm Resources Information Network. Soehrensia spachiana in the Germplasm Resources Information Network (GRIN), U.S. Department of Agriculture Agricultural Research Service. Accessed: 09-Oct-10.

Vernacular names
Afrikaans: Orgelkaktus
English: Golden torch, Torch cactus, White torch cactus
svenska: Ribbkaktus

Soehrensia spachiana, commonly known as the golden torch, (white) torch cactus or golden column, is a species of cactus native to South America. Previously known as Trichocereus spachianus for many years, it is commonly cultivated as a pot or rockery plant worldwide. It has a columnar habit, with a lime-green cylindrical body with 1–2 cm long golden spines.
Description

Soehrensia spachiana grows as a cactus with a columnar habit, reaching 2 m (7 ft) high, with a diameter of 5–6 cm (2–2+1⁄4 in).[2] Vertical branches arise from the base of the plant.[3] Each column has 10–15 rounded ribs. The large areoles are around 1 cm apart, and have wavy yellow hairs. The straight spines are red-yellow initially, fading to white as they age. The central spine is around 1–2 cm (1⁄2–3⁄4 in) long, and is surrounded by 8 to 10 smaller radial spines that are 0.4–1 cm (1⁄4–1⁄2 in) in length. The white flowers are 15 cm (6 in) across and 18–20 cm (7–7+3⁄4 in) long,[2] part of which is an 8 cm long tube. In the northern hemisphere, the flowers appear in June–July and open at night.[4]

Taxonomy

French botanist Charles Antoine Lemaire described the species as Cereus spachianus in 1839, in honour of his countryman Édouard Spach. The type specimen was collected in Argentina, though where in the country is unclear.[3] Alwin Berger erected the subgenus Trichocereus in 1905, incorporating this species.[5] Vincenzo Riccobono elevated Trichocereus to genus status in 1909,[4] and hence it was for many years known as Trichocereus spachianus. The genus encompassed a number of columnar cacti, before being subsumed into Echinopsis. However, a 2012 genetic analysis of chloroplast DNA indicates Echinopsis is made up of several divergent lineages. E. spachiana was not included in the study but is thought to be related to a Helianthocereus clade.[6]
Distribution and habitat

Soehrensia spachiana is native to western Argentina.[3] It is a declared weed in South Africa.[7]
References

"Soehrensia spachiana". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 29 May 2023.
Anderson, Edward F. (2001). The Cactus Family. Pentland, Oregon: Timber Press. p. 280. ISBN 978-0-88192-498-5.
Britton, Nathaniel Lord; Rose, Joseph Nelson (1919). The Cactaceae : descriptions and illustrations of plants of the cactus family. Vol. 1. Washington, D.C.: Carnegie Institution of Washington. pp. 130–32.
Riccobono, Vincenzo (1909). "Sp. 1° Trichocereus Spachianus (Berg. l. c. p. 73)". Bollettino del R. Orto Botanico di Palermo. 8: 237.
Berger, Alwin (1905). "A systematic revision of the genus Cereus Mill". Missouri Botanical Garden Annual Report 1905. 1905: 57–86 [73]. doi:10.2307/2400072. hdl:2027/hvd.32044107241036. JSTOR 2400072.
Schlumpberger, Boris O.; Renner, Susanne S. (2012). "Molecular phylogenetics of Echinopsis (Cactaceae): Polyphyly at all levels and convergent evolution of pollination modes and growth forms". American Journal of Botany. 99 (8): 1335–49. doi:10.3732/ajb.1100288. PMID 22859654.
Neville, Geoffrey; Howard, W.; Murphy, Sean J.; Preston, Guy (2003). Invasive Alien Species in Southern Africa: a: national reports & directory of resources (PDF) (Report). Cape Town, South Africa: Global Invasive Species Programme. Archived from the original (PDF) on 2016-03-03.