Ferocactus glaucescens

Ferocactus glaucescens, the glaucous barrel cactus, is a species of flowering plant in the family Cactaceae, native endemic to México.

Ferocactus glaucescens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Ferocactus
Species:
F. glaucescens
Binomial name
Ferocactus glaucescens
Synonyms
List
    • Echinocactus glaucescens DC. 1828
    • Parrycactus glaucescens (DC.) Doweld 2000
    • Echinocactus dietrichianus C.F.Först. 1861
    • Echinocactus mammillarioides Hook. 1837
    • Echinocactus pfeifferi Zucc. ex Pfeiff. 1837
    • Echinocactus theiacanthus Lem. 1839
    • Echinocactus theionacanthus Lem. 1838
    • Echinofossulocactus pfeifferi (Zucc. ex Pfeiff.) Lawr. 1841
    • Ferocactus pfeifferi (Zucc. ex Pfeiff.) Backeb. 1961
    • Malacocarpus mammillarioides (Hook.) Britton & Rose 1922
    • Neoporteria mammillarioides (Hook.) Backeb. 1939
    • Neoporteria subgibbosa var. mammillarioides (Hook.) Donald & G.D.Rowley 1966
    • Pyrrhocactus mammillarioides (Hook.) Backeb. 1936

Description

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Ferocactus glaucescens is a solitary or branching cactus with spherical or cylindrical blue-green frosted shoots, growing up to 45 cm (18 in) in height and 60 cm (24 in) in diameter. The shoots have slightly depressed apices and 12 to 17 sharp-edged, non-tuberculated ribs with elongated areoles that are often connected. Its yellow spines, which are difficult to distinguish between central and peripheral, can reach up to 3.5 cm (1.4 in) in length, with one central spine and 6 to 7 radial spines.

The bell-shaped, yellow flowers of Ferocactus glaucescens are up to 4.5 cm (1.8 in) long and 2.5 to 3.5 cm (0.98 to 1.38 in) in diameter. Its spherical, whitish or yellowish, red-tinged fruits are fleshy, reaching lengths of up to 2.5 cm (0.98 in) and covered in yellowish, ciliated scales.[2][3]

Distribution

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This species is native to the limestone hills and dry forest of Hidalgo, Guanajuato, Querétaro, and San Luis Potosí states of Mexico at elevations of 550 to 2300 meters.

Taxonomy

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First described as Echinocactus glaucescens in 1828 by Augustin Pyramus de Candolle, the specific epithet "glaucescens" comes from the Latin words "glaucus" for 'blue-green' and "-escens" for 'becoming', referring to the color of the shoots.[4] In 1922, Nathaniel Lord Britton and Joseph Nelson Rose reclassified it into the genus Ferocactus.

Cultivation

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In cultivation in temperate regions it must be grown under glass. It has gained the Royal Horticultural Society's Award of Garden Merit.[5][6] There is a spineless form, Ferocactus glaucescens forma nuda (inermis).[7]

References

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  1. ^ Group), Succulent Plants Specialist (2009-11-16). "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. Retrieved 2024-01-21.
  2. ^ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 293. ISBN 3-8001-4573-1.
  3. ^ Castro, Viviana Alejandra (2013-08-04). "Ferocactus glaucescens". LLIFLE. Retrieved 2024-01-21.
  4. ^ D&Amp, Um National; (France), histoire naturelle (1828). "Mémoires du Muséum d'histoire naturelle". G. Dufour. Retrieved 2024-01-21.
  5. ^ "RHS Plant Selector - Ferocactus glaucescens". Retrieved 2 July 2020.
  6. ^ "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 39. Retrieved 26 February 2018.
  7. ^ Ferocactus glaucescens forma nuda (inermis)
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