Mammillaria backebergiana

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Mammillaria backebergiana
Mammillaria backebergiana subsp. ernestii

Mammillaria backebergiana subsp. ernestii

Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Mammillaria
Type : Mammillaria backebergiana
Scientific name
Mammillaria backebergiana
FGBuchenau

Mammillaria backebergiana is a species of the genus Mammillaria in the cactus family(Cactaceae). The specific epithet honors the German plant collector and cactus researcher Curt Backeberg .

description

Mammillaria backebergiana usually grows individually with a cylindrical body that is up to 30 centimeters high and 5 to 6 centimeters in diameter. The pyramidal, not angular, short warts have no milky sap . The axillae are bare or have few bristles. The 1 to 3  central spines are straight, needle-like, yellowish brown to brown and are only 0.7 to 0.8 centimeters long. The 10 to 12 radial spines are yellowish white with a brown tip; they get darker with age. They are 0.8 to 1 centimeter long.

The purple flowers are 1.8 to 2 inches long and 1 to 1.3 inches in diameter. The fruits are cloudy green towards the tip and whitish underneath and contain brown seeds .

Distribution, systematics and endangerment

Mammillaria backebergiana is common in the Mexican states of Mexico , Guerrero and Michoacán .

It was first described in 1966 by Francisco Guillermo Buchenau .

Synonyms are the following described species and varieties:
Mammillaria ernestii Fittkau (1971), Mammillaria backebergiana var. Ernestii (Fittkau) Glas & Foster (1979) and Mammillaria isotensis Repp. (1987).

The following subspecies are distinguished:

  • Mammillaria backebergiana subsp. backebergiana :
    The nominate form is the most common. It has a medium green body with only 2 to 3 central spines.
  • Mammillaria backebergiana subsp. ernestii (Fittkau) DRHunt :
    The first description was in 1971 by Hans Werner Fittkau (1913–2002) as Mammillaria ernestii . David Richard Hunt introduced the species in 1997 as a subspecies to Mammillaria backebergiana . The subspecies is only found in the state of Mexico near Tonatico. It has a dark green body with only one central spine.

In the Red List of Threatened Species of the IUCN , the species is called " Data Deficient (DD) ", i. H. with insufficient data.

proof

literature

  • Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 370 .
  • Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 114 .

Individual evidence

  1. ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 21.
  2. ↑ FG Buchenau: Mammillaria backebergiana spec. nov. In: The National Cactus and Succulent Journal . Vol. 21, 1966, p. 47.
  3. ↑ HW Fittkau: Mammillaria ernestii HW Fittkau, spec. nov. In: Cactaceas Suculentas Mexicanas . Vol. 16, 1971, p. 36.
  4. ↑ DR Hunt: Mammillaria Postscripts . Volume 6, 1997, p. 8
  5. ↑ Mammillaria backebergiana in the IUCN Red List of Threatened Species 2013.2. Posted by: Terrazas, T., Arias, S. & Arreola, H., 2009. Retrieved December 27, 2013.

Web links

Commons : Mammillaria backebergiana  - collection of images, videos and audio files