Cleistocactus winteri

Cleistocactus winteri is a succulent of the family Cactaceae. Its common name is the golden rat tail.[1] Cleistocactus winteri subsp. colademono, as its synonym Cleistocactus colademononis, has gained the Royal Horticultural Society's Award of Garden Merit.[2]

Golden rat tail
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Cleistocactus
Species:
C. winteri
Binomial name
Cleistocactus winteri
D.Hunt
Synonyms
  • Cleistocactus winteri subsp. colademono
  • Borzicactus colademononis (Diers & Krahn) Lodé
  • Cleistocactus colademononis (Diers & Krahn) Mottram
  • Hildewintera colademononis Diers & Krahn
  • Winterocereus colademononis (Diers & Krahn) Metzing & R.Kiesling
  • Cleistocactus winteri subsp. winteri
  • Borzicactus aureispinus (F.Ritter) G.D.Rowley
  • Cleistocactus aureispinus (F.Ritter) D.R.Hunt
  • Hildewintera aureispina (F.Ritter) F.Ritter ex G.D.Rowley
  • Winteria aureispina F.Ritter
  • Winterocereus aureispinus (F.Ritter) Backeb.

Subspecies
ImageScientific nameCommon NameDistribution
Cleistocactus winteri subsp. colademonis D.R.Hunt (2005) Cola de Mono, Colademono, Monkey tail cactusBolivia (Santa Cruz)
Cleistocactus winteri subsp. winterigolden rat tailBolivia

Description

This plant is a columnar cactus that forms huge tangled mounds of fairly rapid growth, up to 90 centimetres (35 in) high with stems 6 centimetres (2+1⁄4 in) in diameter and 16 to 17 ribs, with 50 spines 0.4 to 1 centimetre (1⁄8 to 3⁄8 in) long. It has many short bristly golden spines that literally cover the surface of the stems. The plant requires water during the summer and to be kept dry in the winter. It reproduces by seeds and cuttings. It has salmon-pink flowers in spring and summer that are 4 to 6 centimetres (1+1⁄2 to 2+1⁄4 in) long and 5 centimetres (2 in) in diameter. Its flowers survive for a few days before transitioning to fruit for a short period of time which are 1 centimetre (3⁄8 in) long.

form
close-up

References
  1. "Cleistocactus winteri".
  2. "Cleistocactus colademononis". The Royal Horticultural Society. 2021. Retrieved 7 July 2021.
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