Thelocactus setispinus

from Wikipedia, the free encyclopedia
Thelocactus setispinus
Thelocactus setispinus

Thelocactus setispinus

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Thelocactus
Type : Thelocactus setispinus
Scientific name
Thelocactus setispinus
( Engelm. ) EFAnderson

Thelocactus setispinus is a species of plant in the genus Thelocactus in the cactus family(Cactaceae). The specific epithet setispinus means 'bristly prickly'.

description

Thelocactus setispinus grows spherical to short cylindrical. The soft fleshy body is fresh green and about 8 to 12 centimeters wide and can grow up to 60 centimeters high with age. The 13 rather narrow and slightly notched ribs are humped. The short, white felted areoles are 10 to 12 millimeters apart. The 12 to 15 radial spines are needle-shaped, radiant, brown or white and up to 4 inches long. The 1 to 3  central spines are longer and stronger, straight and curved like a hook at the tip. This typical thorn has given the plant the nickname hooked cactus .

The red-throated, yellow flowers are 7 inches long. The red fruits are dry when ripe and crack open at the bottom. They are round or elliptical about 8 to 10 millimeters thick, a little scaly.

Distribution, systematics and endangerment

Thelocactus setispinus is distributed in the southern United States in the state of Texas and in the Mexican states of Coahuila , Nuevo León and Tamaulipas .

It was first described as Echinocactus setispinus in 1845 by George Engelmann . Edward Frederick Anderson placed them in the genus Thelocactus in 1987 . There are a lot of invalid double descriptions and recombinations and a multitude of synonyms . The most important of these are Hamatocactus setispinus (Engelm.) Britton & Rose and Ferocactus setispinus (Engelm.) LDBenson .

In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (CR) ". H. listed as not endangered.

proof

literature

  • Edward F. Anderson : The Cactus Family . Timber Press, Portland (Oregon) 2001, ISBN 0-88192-498-9 , pp. 662 .
  • Alwin Berger : Cacti - instructions for culture and knowledge of the most important introduced species . Eugen Ulmer, Stuttgart 1929, p. 243 .
  • Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 232 .
  • Karl Schumann : Complete description of the cacti (Monographia cactacearum) . J. Neumann, Neudamm 1899, p. 339 f . ( online ).

Individual evidence

  1. ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 220.
  2. ↑ George Engelmann, Asa Gray: Plantae Lindheimerianae: an enumeration of F. Lindheimer's collection of Texan plants, with remarks and descriptions of new species, etc. Part I, 1845, p. 38 ( online ).
  3. ↑ Edward Frederick Anderson: Bradleya . Volume 5, 1987, p. 59.
  4. ↑ Thelocactus setispinus in the IUCN Red List of Threatened Species 2013.2. Posted by: Terry, M. & Heil, K., 2009. Retrieved December 14, 2013.

Web links

Commons : Thelocactus setispinus  - Collection of images, videos and audio files