Haageocereus decumbens

Haageocereus decumbens is a species of Haageocereus found in S. Peru to Chile (Tarapacá) [2]

Haageocereus decumbens
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Haageocereus
Species:
H. decumbens
Binomial name
Haageocereus decumbens
(Meyen) F.Ritter 1934
Synonyms
List
    • Binghamia decumbens (Vaupel) Werderm. 1937
    • Borzicactus decumbens (Vaupel) Britton & Rose 1920
    • Cereus decumbens Vaupel 1913
    • Echinopsis decumbens (Vaupel) Mayta 2015
    • Binghamia australis (Backeb.) Werderm.1937
    • Echinopsis magliana Mayta & Molinari 2015
    • Echinopsis subtilispina (F.Ritter) Mayta 2015
    • Haageocereus ambiguus Rauh & Backeb. 1956 publ. 1957
    • Haageocereus ambiguus var. reductus Rauh & Backeb. 1956 publ. 1957)
    • Haageocereus australis Backeb. 1936
    • Haageocereus australis var. acinacispinus Rauh & Backeb. 1956 publ. 1957)
    • Haageocereus australis f. nanus F.Ritter 1980
    • Haageocereus australis f. subtilispinus F.Ritter 1980
    • Haageocereus chalaensis F.Ritter 1981
    • Haageocereus decumbens var. brevispinus F.Ritter 1981
    • Haageocereus decumbens var. spinosior Backeb. 1951
    • Haageocereus decumbens f. spinosior (Backeb.) Krainz 1965
    • Haageocereus litoralis Rauh & Backeb. 1956 publ. 1957
    • Haageocereus mamillatus Rauh & Backeb. 1956 publ. 1957
    • Haageocereus mamillatus var. brevior Rauh & Backeb. 1956 publ. 1957
    • Haageocereus multicolorispinus Buining 1963
    • Haageocereus ocona-camanensis Rauh & Backeb. in C.Backeberg, 1956 publ. 1957
    • Haageocereus subtilispinus F.Ritter 1981

Description

Haageocereus decumbens grows spread out or ascending and often forms richly branched groups with slender shoots that reach diameters of up to 5 centimeters. There are about 20 low ribs. The one or two light to dark brown central spines are directed downwards and are up to 5 centimeters long. The up to 30 and more needle-like yellowish radial spines have a length of 5 to 8 millimeters.

The white flowers reach a diameter of 4.5 centimeters and a length of up to 8 centimeters.[3]

Distribution

Haageocereus decumbens is distributed in Peru in the Arequipa region near Chala and Mollendo at altitudes of 200 to 700 meters.

Taxonomy

The first description as Cereus decumbens was made in 1913 by Friedrich Karl Johann Vaupel.[4] Curt Backeberg placed the species in the genus Haageocereus in 1934. Other nomenclature synonyms are Borzicactus decumbens (Vaupel) Britton & Rose (1920), Binghamia decumbens (Vaupel) Werderm. (1937, incorrect name ICBN article 11.4) and Echinopsis decumbens (Vaupel) Mayta (2015).

References
  1. Assessment), Helmut Walter (Global Cactus; Assessment), Luis Faundez (Global Cactus (2011-05-05). "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. Retrieved 2023-08-24.
  2. "Haageocereus decumbens (Vaupel) Backeb. - Plants of the World Online". Plants of the World Online. Retrieved 2023-05-03.
  3. Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). p. 332-333. ISBN 3-8001-4573-1.
  4. Engler, Adolf (1914). "Botanische Jahrbücher fur Systematik, Pflanzengeschichte und Pflanzengeographie". Schweizerbart [etc.] ISSN 0006-8152. Retrieved 2023-08-24.
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