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Thelocactus rinconensis

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Species of cactus

Thelocactus rinconensis
Conservation status

Least Concern  (IUCN 3.1)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Genus: Thelocactus
Species: T. rinconensis
Binomial name
Thelocactus rinconensis
(Poselg.) Britton & Rose
Synonyms
  • Echinocactus lophothele Salm-Dyck
  • Echinocactus nidulans Quehl
  • Echinocactus phymatothelos Poselg.
  • Echinocactus rinconensis Poselg.
  • Thelocactus lophothele (Salm-Dyck) Britton & Rose
  • Thelocactus nidulans (Quehl) Britton & Rose
  • Thelocactus phymatothele (Poselg.) Britton & Rose
  • Thelocactus rinconensis subsp. freudenbergeri (R.Haas) Mosco & Zanov.
  • Thelocactus rinconensis subsp. hintonii Lüthy
  • Thelocactus rinconensis subsp. icamolensis Halda & Kupčák
  • Thelocactus rinconensis subsp. nidulans (Quehl) Glass
  • Thelocactus rinconensis subsp. palomaensis Pavlíček & Zatloukal
  • Thelocactus rinconensis subsp. phymatothelos (Poselg.) Glass
  • Thelocactus rinconensis var. freudenbergeri R.Haas
  • Thelocactus rinconensis var. nidulans (Quehl) Glass & R.A.Foster
  • Thelocactus rinconensis var. phymatothelos (Poselg.) Glass & R.A.Foster

Thelocactus rinconensis, synonyms including Thelocactus nidulans, is a species of cactus. It is endemic to north-east Mexico.

Description

Thelocactus rinconensis is a small perennial gray-green cactus, growing 6 - 8 centimeters high and is between 12 - 20 centimeters in diameter. It has 20-25 ribs with marked with angular tubercles. The areolas are 2 to 2.5 centimeters apart, circular or elliptical and covered with white wooly hairs. Areoles have 3 to 4 central spines are 6 - 8 centimeters long It features up to six dark brown to black main spines and thin, radial spines that are 1.3-1.5 cm long. Flowers, about 4 cm long and 2.5-7.5 cm wide, are funnel-shaped and yellow or whitish, growing from new growth at the top of the plant. Fruits are spherical to oblong with scales, 7-9 mm in diameter, greenish or yellowish. Seeds are 1.7-2 mm long

  • Pink flower cultivar Pink flower cultivar
  • White flower plant White flower plant

Distribution

The plant is found in the Chihuahuan Desert of Coahuila and Nuevo Leon, Mexico growing at elevations of 1200-1900 meters growing in xerophytic shrubland on calcareous soils.

  • Plant growing near La Gloria in Nuevo Leon Plant growing near La Gloria in Nuevo Leon

Taxonomy

Echinocactus rinconensis was described in The Cactaceae in 1855 by Heinrich Poselger. Nathaniel Lord Britton and Joseph Nelson Rose placed the species in the genus Thelocactus in 1923.

  • Botanical illustration plate from Iconographia Cactacearum Botanical illustration plate from Iconographia Cactacearum
  • Botanical illustration plate from Iconographia Cactacearum Botanical illustration plate from Iconographia Cactacearum

References

  1. Gómez-Hinostrosa, C.; Hernández, H.M.; Sotomayor, M.; Smith, M. (2017). "Thelocactus rinconensis". IUCN Red List of Threatened Species. 2017: e.T152644A121602595. doi:10.2305/IUCN.UK.2017-3.RLTS.T152644A121602595.en. Retrieved 13 November 2021.
  2. ^ "Thelocactus rinconensis (Poselg.) Britton & Rose". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 2024-02-20.
  3. "Find Trees & Learn". University of Arizona Campus Arboretum. Retrieved 2024-05-09.
  4. "Thelocactus rinconensis". LLIFLE. 2013-08-04. Retrieved 2024-05-09. This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
  5. Dietrich, Albert; Otto, Friedrich (1855). "Allgemeine Gartenzeitung". Biodiversity Heritage Library. Retrieved 2024-05-09. This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
  6. 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

Taxon identifiers
Thelocactus rinconensis
Echinocactus rinconensis
Thelocactus nidulans
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