Mammilloydia candida
| Mammilloydia candida | ||||||||||||
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Mammilloydia candida |
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Mammilloydia | ||||||||||||
| Buxb. | ||||||||||||
| Scientific name of the species | ||||||||||||
| Mammilloydia candida | ||||||||||||
| ( Scheidw. ) Buxb. |
Mammilloydia candida is the only plant species of the monotypic genus Mammilloydia in the cactus family(Cactaceae). The botanical name is a combination of the generic names Mammillaria and Neolloydia . The epithet of the species is derived from the Latin adjective "candida" for snow-white and refers to the striking white thorns of the plants.
description
Mammilloydia candida grows singly or forms pads. The pressed spherical to elongated, blue-green shoots are densely covered with white thorns . With diameters between 6 and 14 centimeters, they reach heights of up to 30 centimeters. The non-furrowed warts are broad, cylindrical and blunt. There are 4 to 7 white bristles in the axillae . The numerous thorns sitting in several rows. The 8 to 12 central spines are white with a pink tip and up to 10 millimeters long. The no fewer than 120 radial spines are white, spread out and up to 15 millimeters long.
The flowers appearing individually from the base of the warts are pink or white with a greenish red central stripe and have a diameter of 2 to 3 centimeters. Your pericarpel and corolla tube are bald.
The red to pink to white, juicy, non-tearing fruits are egg-shaped, between 7 and 14 millimeters long and contain black, non-warty seeds 1 millimeter in diameter. The perisperm is absent.
Distribution, systematics and endangerment
Mammilloydia candida is common in the Mexican states of Coahuila , Nuevo León , San Luis Potosí, and Tamaulipas .
It was first described as Mammillaria candida in 1838 by Michael Joseph François Scheidweiler . Franz Buxbaum established their own genus Mammilloydia because of the unique morphology of the seeds compared to the other mammillaries .
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 . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 416-417 .
- Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd Edition. tape V . Gustav Fischer Verlag, Stuttgart New York 1984, ISBN 3-437-30384-8 , p. 3380 .
Individual evidence
- ^ Bulletins de l'Academie Royale des Sciences et des Belles-Lettres de Bruxelles . Volume 5, p. 496, 1838
- ↑ Franz Buxbaum: The phylogeny of the North American Echinocacteen.Trib. Euechinocactineae F. Buxb . In: Oesterreichische Botanische Zeitschrift . Volume 98, number 1-2 1951, p. 65 ( doi: 10.1007 / BF01289304 ).
- ^ Mammilloydia candida in the IUCN Red List of Threatened Species 2013.2. Listed by: Fitz Maurice, B, Fitz Maurice, WA, Hernández, HM, Sotomayor, M. & Smith, M., 2009. Retrieved December 28, 2013.
