Mammillaria cerralboa

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Mammillaria cerralboa
Systematics
Order : Clove-like (Caryophyllales)
Family : Cactus family (Cactaceae)
Subfamily : Cactoideae
Tribe : Cacteae
Genre : Mammillaria
Type : Mammillaria cerralboa
Scientific name
Mammillaria cerralboa
( Britton & Rose ) Orcutt

Mammillaria cerralboa is a species of the genus Mammillaria in the cactus family(Cactaceae).

description

Mammillaria cerralboa grows singly, rarely forming groups. The slender cylindrical shoots are up to 20 centimeters high and 3 to 4 centimeters in diameter. The yellowish green warts are conical to cylindrical in shape, firm and without milky sap . The axillae are covered with short bristles. A straight and sometimes hooked, strong yellowish central spine becomes 1 to 2 centimeters long. The more or less than 10 radial spines are yellow, straight and up to 2 centimeters long.

The funnel-shaped flowers are white with pink-brown central stripes and up to 2 centimeters long and large in diameter. The club-shaped fruits are greenish to more or less purple-red. They contain black seeds .

Distribution, systematics and endangerment

Mammillaria cerralboa is found in the Mexican state of Baja California Sur on the uninhabited Isla Cerralvo .

The first description was in 1923 as Neomammillaria cerralboa by Nathaniel Lord Britton and Joseph Nelson Rose . Charles Russell Orcutt introduced the species to the genus Mammillaria in 1926 .

Synonyms are the following species and varieties described:
Neomammillaria cerralboa Britton & Rose (1923), Mammillaria dioica var. Cerralboa (Britton & Rose) Neutel. (1986) Mammillaria armillata subsp. cerralboa (Britton & Rose) DRHunt (1997) and Bartschella cerralboa (Britton & Rose) Doweld (2000).

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

proof

literature

  • Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 375 .
  • Ulises Guzmán: Catálogo de cactáceas mexicanas . Universidad National Autonoma de México, Mexico City 2007, ISBN 970-9000-20-9 , pp. 119 .
  • R. Zahra: Mammillaria cerralboa . In: National Cactus and Succulent Journal . Volume 36, No. 2, 1981, p. 40.

Individual evidence

  1. ^ NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape IV . The Carnegie Institution of Washington, Washington 1923, p. 116 ( online ).
  2. ↑ CR Orcutt: Cactography . National City and San Diego, 1926, p. 7.
  3. ↑ Mammillaria cerralboa in the IUCN Red List of Threatened Species 2013.2. Posted by: León de la Luz, JL, Gómez-Hinostrosa, C. & Hernández, HM, 2012. Accessed December 23, 2013.

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