Pachycereus pecten-aboriginum
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Pachycereus pecten-aboriginum |
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| ( Engelm. Ex S. Watson ) Britton & Rose |
Pachycereus pecten-aboriginum is a species of the genus Pachycereus in the cactus family(Cactaceae). Foreign language trivial names are "Chik", "Etcho" and "Hecho". The specific epithet pecten-aboriginum means 'crest of the natives'.
description
Pachycereus pecten-aboriginum grows tree-shaped, is richly branched and reaches a height of up to 8 meters. Trunks up to 2 meters in diameter are formed. The deep green, upright and columnar shoots are often puckered across. They have a diameter of 9 to 13 centimeters. There are 10 to 12 ribs that are slightly rounded. The one to three grayish central spines have a darker tip and are up to 1 to 3 centimeters long. The eight to nine radial spines are up to 1 centimeter and grayish. The terminal pseudocephalium consists of reddish brown wool and bristles up to 6 centimeters long.
The white flowers are 7 to 9 inches long. They open at night and stay open until the next day. Your pericarpel and the flower tube are very densely covered with soft, reddish brown hair . There are no or only a few bristles. The dry fruits reach a diameter of 6 to 7.5 centimeters and are wrapped in yellow wool and bristles.
Distribution, systematics and endangerment
Pachycereus pecten-aboriginum is widespread in Mexico along the coast of the Pacific Ocean from the southeast of the state of Baja California , via Sinaloa and Sonora to the isthmus of Tehuantepec in Oaxaca . It was first described as Cereus pecten-aboriginum in 1886 by Sereno Watson . Nathaniel Lord Britton and Joseph Nelson Rose placed them in the genus Pachycereus in 1909 .
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. 492 .
Individual evidence
- ^ Proceedings of the American Academy of Arts and Sciences . Volume 21, Boston 1886, pp. 429-430, (online) .
- ^ NL Britton, JN Rose: The Genus Cereus and its Allies in North America . In: Contributions from the United States National Herbarium . Volume 12, p. 422, 1909, (online) .
- ↑ Pachycereus pecten-aboriginum in the IUCN Red List of Threatened Species 2013.2. Posted by: Arreola, H., Arias, S. & Terrazas, T., 2009. Retrieved January 25, 2014.
further reading
- Francisco Molina-Freaner, Alberto Rojas-Martínez, Theodore H. Fleming, Alfonso Valiente-Banuet: Pollination biology of the columnar cactus Pachycereus pecten-aboriginum in north-western México . In: Journal of Arid Environments . Vol. 56, No. 1, 2004, pp. 117-127, doi : 10.1016 / S0140-1963 (02) 00323-3 .
