Stenocereus

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Stenocereus
Stenocereus thurberi flower

Stenocereus thurberi
flower

Systematics
Nuclear eudicotyledons
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Pachycereeae
Genre : Stenocereus
Scientific name
Stenocereus
( A. Berger ) Riccob.

Stenocereus is a genus of plants inthe cactus family (Cactaceae). The botanical name is derived from the Greek adjective "στενός" (stenos) for narrow, narrow and refers to the relatively narrow ribs of the plants.

description

The species of the genus Stenocereus grow tree-like or shrubby, are sometimes elongated or crawling and form thickets or sometimes have well-formed trunks. The green, strong shoots are cylindrical and have numerous ribs with clearly defined, woolly areoles from which strong thorns arise. Warts may be present or absent.

The funnel-shaped or bell-shaped flowers usually open at night. Your pericarpel is covered with numerous, usually thorny, areoles.

Thorns sit on the spherical to egg-shaped, more or less fleshy fruits . They are up to three inches long and tear irregularly. The remnants of the flowers are persistent and in most species only fall off shortly before maturity. The fruits contain large, bright black and usually smooth seeds .

Systematics and distribution

Stenocereus is found in the arid regions of the southwestern United States , Mexico , Central America , the Caribbean , Venezuela, and Colombia .

Alwin Berger established Stenocereus in 1905 as a subgenus of Cereus ( Cereus subg. Stenocereus ). Vincenzo Riccobono then raised the sub-genus to the rank of a genus in 1909. The type species of the genus is Cereus stellatus .

Paul V. Heath pointed out in 1992 that the generic name Rathbunia, also published by Nathaniel Lord Britton and Joseph Nelson Rose in 1909, had priority over the generic name Stenocereus , since it was published earlier. Since the genus name Stenocereus was much better known in the botanical and horticultural literature, however, Nigel Paul Taylor and Arthur Charles Gibson submitted the proposal in 1994 to keep the genus name Stenocereus and reject the genus name Rathbunia . This proposal was confirmed at the International Botanical Congress in St. Louis in 1999 and was incorporated into the revision of the International Code of Botanical Nomenclature published in 2000 .

The genus includes the following species:

Synonyms of the genus are Rathbunia Britton & Rose (1909), Machaerocereus Britton & Rose (1920), Isolatocereus Backeb. (1942), Ritterocereus Backeb. (1942), Hertrichocereus Backeb. (1950) Marshallocereus Backeb. (1950), Griseocactus Guiggi (2012) and Griseocereus Guiggi (2012), nom. inval.

proof

literature

Individual evidence

  1. ^ Report of the Missouri Botanical Garden . Volume 16, p. 66, St. Louis 1905
  2. ↑ Bollettino delle R [eale] Orto Botanico di Palermo . Volume 8, p. 253, Palermo 1909
  3. ^ PV Heath: The restoration of Rathbunia Britton & Rose . In: Calix . Volume 2, Brighton 1992, pp. 102-115.
  4. ^ NL Britton, JN Rose: The Genus Cereus and its Allies in North America . In: Contributions from the United States National Herbarium . Volume 12, pp. 414, 1909, online
  5. ^ NP Taylor, AC Gibson: (1086) Proposal to Conserve Stenocereus against Rathbunia (Cactaceae) . In: Taxon . Volume 43, Number 1, 1994, pp. 129-131, JSTOR 1223471
  6. ^ Dan H. Nicolson: Report on the Status of Proposals, Published until May 1999, to Conserve and / or Reject Names or to Oppress Works . In: Taxon . Volume 48, Number 2, May 1999, p. 399, JSTOR 122444
  7. ↑ International Code of Botanical Nomenclature (Saint Louis Code). Annex IIIA. Nomina generica conservanda et rejicienda
  8. ^ Edward F. Anderson : The great cactus lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 598-605 .
  9. ↑ Patricia Hernández-Ledesma, Walter G. Berendsohn, Thomas Borsch, Sabine Von Mering, Hossein Akhani, Salvador Arias, Idelfonso Castañeda-Noa, Urs Eggli, Roger Eriksson, Hilda Flores-Olvera, Susy Fuentes-Bazán, Gudrun Kadereit, Cornelia Klak , Nadja Korotkova, Reto Nyffeler, Gilberto Ocampo, Helga Ochoterena, Bengt Oxelman, Richard K. Rabeler, Adriana Sanchez, Boris O. Schlumpberger, Pertti Uotia: A taxonomic backbone for the global synthesis of species diversity in the angiosperm order Caryophyllales . In: Willdenowia . Volume 45, number 3, 2015, pp. 281-383 ( doi: 10.3372 / wi.45.45301 ).

Web links

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