Echinocereus poselgeri

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Echinocereus poselgeri
Echinocereus poselgeri.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. poselgeri
Binomial name
Echinocereus poselgeri
Synonyms [3]
  • Cereus poselgeri(Lem.) J.M.Coult. 1896
  • Cereus tuberosusPoselg. 1853
  • Wilcoxia poselgeri(Lem.) Britton & Rose 1909
  • Echinocereus poselgeri subsp. gerhardiiWaldeis, W.Blum & D.Felix 2008
  • Echinocereus tamaulipensis(Werderm.) Mich.Lange 1995
  • Echinocereus tuberosusPoselg. ex Rümpler 1886
  • Wilcoxia tamaulipensisWerderm. 1938
  • Wilcoxia tamaulipensis var. brevissimaA.Cartier 1980

Echinocereus poselgeri, also known as the dahlia cactus, is a species of Echinocereus. It is native to Coahuila and southern Texas. [4]

Contents

Description

Echinocereus poselgeri typically grows with several spreading shoots, forming a tuberous, dahlia-like rhizome. The dark blue-green shoots are slender, cylindrical, and taper to a point, measuring 60 to 120 cm (24 to 47 in) long and 1 to 2 cm (0.39 to 0.79 in) in diameter. They have eight to ten low, inconspicuous ribs that are not tuberculated. A single, slightly flattened, dark central spine points toward the shoot tip and is up to 9 mm (0.35 in) long. The eight to 16 whitish or grayish marginal spines, which have darker tips, are 2 to 4.5 mm (0.079 to 0.177 in) long. [5]

The funnel-shaped flowers are slightly pinkish-magenta, appearing near the tips of the shoots. They can be up to 6 cm (2.4 in) long and 7 cm (2.8 in) in diameter. The dark green to brown fruits are egg-shaped and covered with persistent wool and thorns. [5]

Distribution

Echinocereus poselgeri is growing in scrub valleys and hills of southern Texas, USA, and the Mexican states of Coahuila, Nuevo León, Tamaulipas, and San Luis Potosí, typically found at low elevations in sandy soil at elevations up to 1150 meters. [6]

Taxonomy

Charles Lemaire first described the species in 1868. The specific epithet poselgeri honors Heinrich Poselger, a German doctor, chemist, and botanist who collected succulent plants in North America from 1849 to 1851. [7]

Echinocereus poselgeri from Bluhende Kakteen - Iconographia Cactacearum 1904 Echinocereus poselgeri pm.jpg
Echinocereus poselgeri from Blühende Kakteen - Iconographia Cactacearum 1904

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References

  1. Corral-Díaz, R.; Goettsch, B.K.; Gómez-Hinostrosa, C.; Terry, M.; Heil, K. (2017). "Echinocereus poselgeri". IUCN Red List of Threatened Species . 2017: e.T151193A121440514. doi: 10.2305/IUCN.UK.2017-3.RLTS.T151193A121440514.en . Retrieved 20 November 2021.
  2. USDA, NRCS (n.d.). "Echinocereus poselgeri". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved September 7, 2013.
  3. "Echinocereus poselgeri". wildflower.org. Retrieved 18 March 2014.
  4. "Echinocereus poselgeri". cactiguide.com. Retrieved 18 March 2014.
  5. 1 2 Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 204. ISBN   3-8001-4573-1.
  6. Vallicelli, Valentino (2013-08-04). "Echinocereus poselgeri". LLIFLE. Retrieved 2024-06-23. Creative Commons by-sa small.svg  This article incorporates textfrom this source, which is available under the CC BY-SA 3.0 license.
  7. Lemaire, C. (1869). Les cactées: histoire, patrie, organes de végétation. Bibliothèque du jardinier (in French). Maison rustique. p. 57. Retrieved 2024-06-23.