Echinocereus sciurus

from Wikipedia, the free encyclopedia
Echinocereus sciurus
Echinocereus sciurus subsp. sciurus

Echinocereus sciurus subsp. sciurus

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Pachycereeae
Genre : Echinocereus
Type : Echinocereus sciurus
Scientific name
Echinocereus sciurus
( K.Brandegee ) Britton & Rose

Echinocereus sciurus is a species of plant in the genus Echinocereus from the cactus family(Cactaceae). The specific epithet sciurus means 'squirrel' and stands for the color and texture of the thorns similar to a squirrel.

description

Echinocereus sciurus grows like a lawn, constantly sprouting and forms groups up to 60 centimeters in size. The slender individual shoots are often up to 20 centimeters long and are almost hidden by the abundant thorns . The 12 to 17  ribs are low, divided into numerous warts 5 to 6 millimeters apart . The slender 15 to 18 radial spines, which are provided with small areoles and arranged in a circle, are pale with brownish tips. Usually several central spines are shorter than the radial spines and provided with a brown inclined spine. The funnel-shaped flowers are light to more or less deep purple-pink. They become up to 7 centimeters long and reach a diameter of 9 centimeters. They have numerous stamens with greenish stamens and a green-colored stigma .

Distribution, systematics and endangerment

Echinocereus sciurus is common in the Mexican states of Baja California Sur and Sinaloa .

It was first described in 1904 as Cereus sciurus by Mary Katharine Brandegee . Nathaniel Lord Britton and Joseph Nelson Rose introduced them to Echinocereus in 1922 .

The following species and varieties described are synonyms : Cereus sciurus Brandegee (1904), Echinocereus subterraneus Backeb. (1960), Echinocereus sciurus var. Floresii (Backeb.) NPTaylor (1985), Echinocereus floresii O.Schwarz (1949), Echinocereus floresii Schwarz ex Backeb. (1985) and Echinocereus bristolii subsp. floresii (Backeb.) W.Blum & Mich . Lange (1998).

The following subspecies are distinguished:

  • Echinocereus sciurus subsp. sciurus
  • Echinocereus sciurus subsp. floresii (Backeb.) NPTaylor :
    The subspecies was originally described by Curt Backeberg in 1949 as Echinocereus floresii . Nigel Paul Taylor included it as a subspecies to Echinocereus sciurus in 1997 .

In the Red List of Threatened Species of IUCN is the species as " Endangered (EN) ," d. H. listed as endangered.

proof

literature

  • Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 208-209 .
  • Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 75 .

Individual evidence

  1. ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 217.
  2. ↑ Brandegee: Zoe 5, 1904, p. 192 (online) .
  3. ^ NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape III . The Carnegie Institution of Washington, Washington 1923, p. 22-23 ( online ).
  4. ↑ Backeberg: Blätter fur Succulents. Volksdorf Volume 1, 1949, p. 5.
  5. ↑ Taylor: Cactaceae Consensus Initiatives Volume 3, 1997; P. 10.
  6. ↑ Echinocereus sciurus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: León de la Luz, JL, Hernández, HM & Gómez-Hinostrosa, C., 2012. Retrieved January 25, 2014.

Web links

Commons : Echinocereus sciurus  - album with pictures, videos and audio files