Echinocereus polyacanthus

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Echinocereus polyacanthus
Cactus in garden.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Echinocereus
Species:
E. polyacanthus
Binomial name
Echinocereus polyacanthus
Engelm. 1848
Synonyms
  • Echinocereus triglochidiatus var. polyacanthus(Engelm.) L.D.Benson 1944
  • Echinocereus triglochidiatus subsp. polyacanthus(Engelm.) U.Guzmán 2003
  • Cereus leeanusHook. 1849
  • Cereus pacificusJ.M.Coult. 1896
  • Cereus pleiogonusLabour. 1853
  • Cereus polyacanthusEngelm. 1849
  • Echinocereus durangensisRümpler 1885
  • Echinocereus durangensis var. nigrispinusRümpler 1885
  • Echinocereus durangensis var. rufispinusRümpler 1885
  • Echinocereus leeanus(Hook.) Lem. ex Rümpler 1885
  • Echinocereus leeanus var. multicostatus(Cels) K.Schum. 1898
  • Echinocereus multicostatusCels 1885
  • Echinocereus pleiogonus(Labour.) Croucher 1878
  • Echinocereus triglochidiatus var. multicostatus(Cels) W.T.Marshall 1953

Echinocereus polyacanthus is a species of cactus native to Mexico. [2]

Contents

Description

Echinocereus polyacanthus grows solitary or in clusters, often forming groups or cushions with up to 400 shoots. [3] The bright to dark green cylindrical shoots taper at both the base and tip, measuring 10 to 30 centimeters in length and 2 to 7.5 cm (0.79 to 2.95 in) in diameter. [3] They feature nine to 13 smooth or tuberous ribs. [3] Each plant has one to seven brown or yellow-brown central spines, thickened at the base, and up to 5 cm (2.0 in) long, though their length varies. [3] Additionally, there are six to 14 overlapping, dirty white radial spines, each up to 2 cm (0.79 in) long. [3]

The flowers are tubular to funnel-shaped, ranging from bright pinkish-orange to deep red, with a yellowish or whitish throat. [3] They appear near the shoot tips, measuring 3 to 14 cm (1.2 to 5.5 in) in length and 2 to 8 cm (0.79 to 3.15 in) in diameter. [3] The green, egg-shaped fruits contain white flesh and do not tear. [3]

Distribution

Echinocereus polyacanthus is found in Arizona and New Mexico in the United States, extending Chihuaua, Durango, Cosihuiriachi, Sierra Madre Occidental in eastern Sonora Mexico, and Baja California peninsula in Mexico growing on rocky outcrops between 1,300 and 2,000 m (4,300 and 6,600 ft). [4]

Taxonomy

It was first described as Cereus polyacanthus by George Engelmann in 1848. [5] The specific epithet "polyacanthus" comes from the Greek words "poly" (many) and "akantha" (thorn), referring to the species' thorny shoots.[ citation needed ]

References

  1. ↑ Baker, M.; Van Devender, T. (2017) [amended version of 2013 assessment]. "Echinocereus polyacanthus". IUCN Red List of Threatened Species . 2017 e.T152072A121457831. doi: 10.2305/IUCN.UK.2017-3.RLTS.T152072A121457831.en .
  2. ↑ "Echinocereus polyacanthus Engelm". Plants of the World Online . Royal Botanic Gardens, Kew. Retrieved 2024-06-29.
  3. 1 2 3 4 5 6 7 8 Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 203-204. ISBN   3-8001-4573-1.
  4. ↑ "Echinocereus polyacanthus". LLIFLE. 2013-08-04. Retrieved 2024-06-30. Creative Commons by-sa small.svg  This article incorporates textfrom this source, which is available under the CC BY-SA 3.0 license.
  5. ↑ Wislizenus, F. A. (1848). Memoir of a tour to northern Mexico :connected with Col. Doniphan's expedition, in 1846 and 1847 /by A. Wislizenus. Washington: Tippin & Streeper, printers. doi:10.5962/bhl.title.41509.
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