Disocactus martianus

from Wikipedia, the free encyclopedia
Disocactus martianus
Disocactus martianus pm.jpg

Disocactus martianus

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Hylocereeae
Genre : Disocactus
Type : Disocactus martianus
Scientific name
Disocactus martianus
( Zucc. Ex Pfeiff. ) Barthlott
Typical growth habit

Disocactus martianus is a species of the genus Disocactus in the cactus family(Cactaceae). The specific epithet honors the German botanist Carl Friedrich Philipp von Martius .

description

Disocactus martianus grows creeping, occasionally forming lithophytic with aerial roots. The individual shoots are up to 1.5 meters long and up to 2.5 centimeters thick. The 8 to 10 wart-shaped ribs are fenced off by 3 to 4 brown central spines. The 6 to 10 radial spines are light yellowish and only 5 to 7 millimeters in size. Bright red day flowers with a size of 10 to 12 centimeters in diameter and a length of 5 to 7 centimeters alternate throughout the summer. The green, round fruits are up to 2 centimeters in size.

Distribution, systematics and endangerment

Disocactus martianus is common in the Mexican state of Oaxaca .

It was first described as Cereus martianus in 1837 by Ludwig Georg Karl Pfeiffer . Wilhelm Barthlott introduced the species to Disocactus in 1991 .

The following species and varieties are synonyms : Cereus martianus Zucc. (1832), Eriocereus martianus Riccob. (1909), Aporocactus martianus Britton & Rose (1920), Aporocactus conzattii Britton & Rose (1920), Cereus conzattii (Britton & Rose) A. Berger (1929) and Aporocactus martianus var. Conzattii (Britton & Rose) PVHeath (1992) .

In the Red List of Threatened Species of IUCN is the species as " Near Threatened (NT)", d. H. listed as low risk.

proof

literature

  • Edward F. Anderson : The Cactus Family . Timber Press, Portland (Oregon) 2001, ISBN 0-88192-498-9 , pp. 224 .
  • Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd Edition. Volume II: Cereoideae: Hylocereeae - Cereeae [Austrocereinae] . Gustav Fischer Verlag, Stuttgart / New York 1983, p. 821 .
  • Alwin Berger : Cacti - instructions for culture and knowledge of the most important introduced species . Eugen Ulmer, Stuttgart 1929, p. 109 .
  • NL Britton , JN Rose : The Cactaceae . Descriptions and Illustrations of Plants of the Cactus Family . tape II . The Carnegie Institution of Washington, Washington 1923, p. 220 ( online ).
  • Karl Schumann : Complete description of the cacti (Monographia cactacearum) . J. Neumann, Neudamm 1899, p. 143 ( online ).

Individual evidence

  1. ^ National Botanic Garden of Belgium - History-Online
  2. ↑ Enumeratio Diagnostica Cactearum hucusque Cognitarum . Berlin 1837, p. 110, (online)
  3. ↑ Bradleya . Volume 9, 1991, p. 88.
  4. ↑ Disocactus martianus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Hernández, HM, Gómez-Hinostrosa, C. & Cházaro, M., 2009. Retrieved January 5, 2014.

Web links

Commons : Disocactus martianus  - album with pictures, videos and audio files