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Borzicactus Websteramus, Cleistocactus, Huntington Desert Garden.jpg
Borzicactus websteramus, syn. Cleistocactus webstramus
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Core eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Trichocereeae
Genus: Cleistocactus

49 species, including:

Cleistocactus is a genus of columnar cacti native to mountainous areas - to 3,000 m (9,843 ft)[1] - of Peru, Uruguay, Bolivia and Argentina. The name comes from the Greek kleistos meaning closed because the flowers hardly open.

The stems are tall and mostly slender and often many-branched with numerous ribs with closely set areoles and spines. The flowers are tubular and the tips hardly open with only the style and stamens usually protruding.


The following genera have been brought into synonymy with this genus:


  1. ^ RHS A-Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  • Innes C, Wall B (1995). Cacti, Succulents and Bromaliads. Cassell & The Royal Horticultural Society.
  • The species list is referenced from which is in turn referenced from several books which are listed on that site. The principal book listed here is The Cactus Family by Edward F. Anderson.

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