Cereus forbesii

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Cereus forbesii
Cereus forbesii.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Cereus
Species:
C. forbesii
Binomial name
Cereus forbesii
C.F.Först.
Synonyms [2]
  • Cereus cochabambensisCárdenas
  • Cereus cochabambensis var. longicarpaCárdenas
  • Cereus comarapanusCárdenas
  • Cereus hankeanuF.A.C.Weber ex K.Schum.
  • Cereus huilunchuCárdenas
  • Piptanthocereus comarapanus(Cárdenas) F.Ritter
  • Piptanthocereus forbesii(C.F.Först.) Riccob.
  • Piptanthocereus forbesii var. bolivianusF.Ritter
  • Piptanthocereus hankeanus(F.A.C.Weber ex K.Schum.) Riccob.
  • Piptanthocereus huilunchu(Cárdenas) F.Ritter
  • Piptanthocereus labouretianusRiccob.

Cereus forbesii is a species of columnar cactus whose native range is Bolivia to N. Central Argentina. [2]

Contents

Common hybrids include C. forbesii 'Ming Thing' (a monstrose form) and 'Spiralis', with its vertically spiraling growth habit.

Description

C. forbesii is a columnar, branching, colony-forming cactus which can grow up to 3 m (9 ft 10 in) in height, with a mature circumference of around 15 cm (5.9 inches); however, due to weather, natural breakage, self-propagation and other growth-limiting factors, it is more frequently observed at a height of about 2 m (6 ft 7 in). Larger specimens have been noted as exceeding 7 m (23 ft) tall. The cylindrical, glaucoma shoots are initially blue-green and later turn light green, with a diameter of 5 to 8 centimeters. The columns are composed of 4-8 blunt, compressed ribs. The gray areoles are small. The (mostly singular) central spine, which occasionally forms two or three, is strong, yellowish-brown and up to 16 centimeters (6 in) long. The five surrounding radial spines reach a length of up to 2 centimeters (0.79 in).

The flowers are white to reddish, often with a backing of pink petals and a yellow center. The blooms, when pollinated, ripen into red, pulpy fruits, not unlike the fruits of some Opuntia species.

Distribution

It is endemic to the Argentine provinces of Catamarca, Chaco, Córdoba, Formosa, Jujuy, La Rioja, Salta, Santa Fe, Santiago del Estero and Tucumán, and north of the city of San Luís. In Bolivia, it is found in the departments of Chuquisaca, Santa Cruz and Tarija. It grows atop arid, windswept hills, within sparse forests, wooded plains, and also on the edges of salt flats, often an elevation of 500–2,000 m (1,600–6,600 ft). [3] Like similarly related cacti, C. forbesii has adapted to extreme temperature fluctuations, including full-sun conditions during the daytime with seasonal near-freezing temperatures at night (especially in winter). Plants growing over 2,000 m above sea level may even contend with wintertime snowfall.

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References

  1. ↑ "Cereus hankeanus". The IUCN Red List of Threatened Species . International Union for Conservation of Nature. 21 August 2019. doi: 10.2305/IUCN.UK.2017-3.RLTS.T152176A121461728.en .
  2. 1 2 "Cereus forbesii C.F.Först." Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 14 December 2021.
  3. ↑ "Cereus forbesii". www.llifle.com. Retrieved 13 December 2021.
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