Cleistocactus ritteri

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Cleistocactus ritteri
Cleistocactus ritteri, Jardin Botanico de Munich, Alemania, 2013-05-04, DD 01.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Cleistocactus
Species:
C. ritteri
Binomial name
Cleistocactus ritteri
Backeb. ex Guiggi 2020
Synonyms
  • Cephalocleistocactus ritteri(Backeb.) Backeb. 1962
  • Cleistocactus ritteriBackeb. 1959

Cleistocactus ritteri is a species of Cleistocactus found in Bolivia. [2]

Contents

Description

Cleistocactus ritteri grows as a shrub with more or less upright, bright green shoots that are branched at the base and reaches heights of 1 to 2 meter with a diameter of 2 to 3 centimeters. There are 12 to 14 ribs. The brown areoles on it later turn white and 5 mm apart. The 5 yellowish central spines are up to 10 millimeters long. The up to 30 fine radial spines are white and 6–8mm long.

The tubular, greenish-yellow to lemon-yellow flowers are slightly downward-pointing and barely curved that blooms from the areoles near the apex of the stems. They are up to 3–4 centimeters long and 5 mm wide. The spherical, green to yellow fruits reach a diameter of up to 1.5 centimeters. Seeds are black pyriform and 0.8 mm long. [3]

Distribution

Cleistocactus ritteri is found beneath trees and shrubs in loamy soil of the Bolivian department of La Paz in the Yungas at altitudes of 2700 to 3000 meters. [4]

Taxonomy

The first description was made in 1959 by Curt Backeberg who named the plant after Friedrich Ritter. A nomenclature synonym is Cephalocleistocactus ritteri (Backeb.) Backeb. (1962).

In the IUCN Red List of Threatened Species, the species is listed as "Least Concern (LC)". H. listed as not endangered. [1]

References

  1. 1 2 "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. 2010-09-21. Retrieved 2023-08-07.
  2. ↑ "Cleistocactus ritteri Backeb. ex Guiggi". Plants of the World Online. Retrieved 2023-08-07.
  3. ↑ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 124. ISBN   3-8001-4573-1.
  4. ↑ Lowry, Martin (2016). "A synopsis of the genusCleistocactusLemaire (Cactaceae)". Bradleya. 34 (34). British Cactus and Succulent Society: 148–186. doi:10.25223/brad.n34.2016.a6. ISSN   0265-086X.
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