Coryphantha potosiana
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Coryphantha potosiana |
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| ( Jacobi ) Glass & RAFoster |
Coryphantha potosiana is a species of plant in the genus Coryphantha from the cactus family(Cactaceae). The specific epithet potosiana refers to the occurrence of the species in the Mexican state of San Luis Potosí .
description
Coryphantha potosiana grows individually with spherical gray-green shoots up to 8 centimeters in diameter. The up to 8 millimeters long warts are conical in shape. Yellowish orange nectar glands are located in the axillae and in the furrows of the warts . The single central spine , which is usually missing, is protruding and slightly curved downwards. It is yellowish with a darker tip and 1.5 to 2.3 inches long. The twelve to 18 whitish, brown-tipped radial spines are radiating and interlocking.
The light tan to cream colored flowers are up to 2.2 centimeters long and reach a diameter of 2 centimeters. The initially cloudy green fruits are later tan. They have lengths of up to 1.2 centimeters.
Distribution, systematics and endangerment
Coryphantha potosiana is widespread in the Mexican state of San Luis Potosí on ridges of hills with almost bare lava soil.
The first description as Mammillaria potosiana by Georg Albano von Jacobi was published in 1856. Charles Edward Glass and Robert Alan Foster put the species in the genus Coryphantha in 1971 .
In the Red List of Threatened Species of IUCN is the species as " Critically Endangered (CR) ", d. H. listed as critically endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 156 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 190.
- ↑ General garden newspaper . Volume 24, 1856, p. 92.
- ^ Cactus and Succulent Journal . Volume 43, Cactus and Succulent Society of America, 1971, p. 7.
- ^ Coryphantha potosiana in the IUCN Red List of Threatened Species 2013.2. Listed by: Fitz Maurice, B, Sotomayor, M. & Fitz Maurice, WA, 2009. Retrieved December 14, 2013.
Web links
- Photos of Coryphantha potosiana