Echinopsis arboricola

Echinopsis arboricola
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Echinopsis
Species:
E. arboricola
Binomial name
Echinopsis arboricola
(Kimnach) Mottram[1]
Synonyms[1]
  • Soehrensia arboricola (Kimnach) Schlumpb.
  • Trichocereus arboricola Kimnach

Echinopsis arboricola, synonym Soehrensia arboricola, is a species of Soehrensia found in northwest Argentina and Bolivia.[1]

Description

Echinopsis arboricola is a shrubby plant that starts upright but later becomes drooping. Its slender, cylindrical, dark green stems can grow over 120 cm (47 in) long, with a diameter of 2.5 to 4 cm (0.98 to 1.57 in), and develop aerial roots. The stems have nine to eleven ribs with almost cube-shaped or conical humps up to 3 mm (0.12 in) high, topped with wooly white areoles. From these areoles, nine to 15 needle-like thorns radiate, one of which is longer, ranging from 0.1 to 2.3 cm (0.039 to 0.906 in) in length and yellowish to brownish in color. The bell-shaped, white flowers bloom near the top of the shoot, opening at night. They measure 12 to 13 cm (4.7 to 5.1 in) long and 13 to 15 cm (5.1 to 5.9 in) in diameter.[2]

Taxonomy

Originally described as Trichocereus arboricola by Myron William Kimnach in 1990, the species was named for its epiphytic habitat, with "arboricola" derived from the Latin "arbor" (tree) and "-cola" (dweller).[3] In 2012, Boris O. Schlumpberger reclassified the species into the genus Soehrensia.[4] As of February 2026, Plants of the World Online placed it in the genus Echinopsis.[1]

Distribution

Echinopsis arboricola is found in southern Bolivia and the Salta province of Argentina,[1] at altitudes of 500 to 1,000 m (1,600 to 3,300 ft).

References

  1. ^ a b c d e "Echinopsis arboricola (Kimnach) Mottram". Plants of the World Online. Retrieved 2026-02-20.
  2. ^ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 217. ISBN 3-8001-4573-1.
  3. ^ Eggli, Urs; Newton, Leonard E. (2010-11-30). Etymological Dictionary of Succulent Plant Names. Springer. p. 14. ISBN 978-3-642-05597-3.
  4. ^ Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris; Berendsohn, Walter G. (2021-08-31). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. 51 (2). Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. doi:10.3372/wi.51.51208. ISSN 0511-9618.