Borzicactus icosagonus

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Borzicactus icosagonus
File:Cleistocactus icosagonus 04 Detail.jpg
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Borzicactus
Species:
B. icosagonus
Binomial name
Borzicactus icosagonus
(Kunth) Britton & Rose
Synonyms
  • Binghamia icosagona (Kunth) Backeb. 1936
  • Cactus icosagonus Kunth 1823
  • Cereus icosagonus (Kunth) DC. 1828
  • Cleistocactus icosagonus (Kunth) F.A.C.Weber 1904
  • Matucana icosagona (Kunth) Buxb. 1973
  • Seticereus icosagonus (Kunth) Backeb. 1937

Borzicactus icosagonus is a species of cacti found in Ecuador and Peru.

Description

Borzicactus icosagonus grows as a shrub with prostrate to creeping or ascending shoots and forms large, low piles. The light green shoots reach a length of 20 to 60 centimeters with diameters of 3 to 5 centimeters. There are 8 to 21 low, rounded ribs, which are divided into cusps by furrows. The areoles on it are close together. Areoles capable of flowering are covered with numerous, fine, long bristles. The 25 to 60 golden yellow thorns are needle-like or bristly and 1 to 1.5 centimeters long. The almost straight, crooked-edged, pink to scarlet to orange flowers are 7 to 8 centimeters long. Their pericarpel is covered with small scales with a few hairs. The spherical, green to yellow fruits reach a diameter of 2 to 4 centimeters and are often covered with a few hairs.[2]

Subspecies

Accepted subspecies:[3]

Image Name Distribution
File:Cleistocactus humboldtii pm.jpg Borzicactus icosagonus subsp. humboldtii (Kunth) G.J.Charles Peru.
File:Cleistocactus icosagonus 2.jpg Borzicactus icosagonus subsp. icosagonus Ecuador to Peru
File:Akersia roseiflora.jpg Borzicactus icosagonus subsp. roseiflorus (Buining) G.J.Charles Ecuador

Distribution

Borzicactus icosagonus is widespread in the Ecuadorian provinces of Azuay and Loja and in the Peruvian Piura region at altitudes of 1000 to 3000 meters.

Taxonomy

The first description as Cactus icosagonus was made in 1823 by Karl Sigismund Kunth.[4] The specific epithet icosagonus is derived from the Greek words eikosi for 'twenty' and gonia for 'edge' and refers to the originally observed number of ribs of the species. Nathaniel Lord Britton and Joseph Nelson Rose placed the species in the genus Borzicactus in 1920.[5] Further nomenclature synonyms are Cereus icosagonus (Kunth) DC. (1828), Cleistocactus icosagonus (Kunth) F.A.C.Weber (1904), Binghamia icosagona (Kunth) Backeb. (1936), Seticereus icosagonus (Kunth) Backeb. (1937) and Matucana icosagona (Kunth) Buxb. (1973).

References

  1. ↑ Ostalaza, C.; Loaiza, C. (2017) [amended version of 2013 assessment]. "Cleistocactus icosagonus". IUCN Red List of Threatened Species. 2017: e.T152875A121492621. doi:10.2305/IUCN.UK.2017-3.RLTS.T152875A121492621.en.
  2. ↑ Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in Deutsch). Stuttgart (Hohenheim): Ulmer. p. 12. ISBN 3-8001-4573-1.
  3. ↑ Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris; Berendsohn, Walter G. (2021-08-31). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. 51 (2). doi:10.3372/wi.51.51208. ISSN 0511-9618.
  4. ↑ Bonpland, Aimé; Humboldt, Alexander von; Kunth, Karl Sigismund (1815). Nova genera et species plantarum :quas in peregrinatione ad plagam aequinoctialem orbis novi collegerunt /descripserunt, partim adumbraverunt Amat. Bonpland et Alex. de Humboldt ; ex schedis autographis Amati Bonplandi in ordinem digessit Carol. Sigismund. Kunth ... Antverpiae: Ex officina Christophori Plantini. doi:10.5962/bhl.title.640.
  5. ↑ Britton, Nathaniel Lord; Eaton, Mary E.; Rose, J. N.; Wood, Helen Adelaide (1919). The Cactaceae : descriptions and illustrations of plants of the cactus family. Washington: Carnegie Institution of Washington. doi:10.5962/bhl.title.46288.

External links

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