Bergerocactus emoryi
| Bergerocactus emoryi | ||||||||||||
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Bergerocactus emoryi |
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| Scientific name of the genus | ||||||||||||
| Bergerocactus | ||||||||||||
| Britton & Rose | ||||||||||||
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| Bergerocactus emoryi | ||||||||||||
| ( Engelm. ) Britton & Rose |
Bergerocactus emoryi is the only plant species of the monotypic genus Bergerocactus in the cactus family(Cactaceae). The botanical name of the genus honors the German cactus specialist Alwin Berger . The specific epithet emoryi honors the American major William Hemsley Emory (1811-1887), who was responsible for the surveying work on the Mexican border from 1850 to 1854. English common names are "Golden Cereus", "Golden Spine Cereus", "Prohibition Cactus", "Sprawling Cactus" and "Velvet Cactus".
description
The shrubby Bergerocactus emoryi is heavily branched close to the ground and often forms cushions several meters in diameter. The more or less upright, cylindrical shoots reach heights of growth of up to 60 centimeters with a diameter of 3 to 6 centimeters. The 20 to 25 ribs are inconspicuous. The 20 to 30 thorns are yellow, darken with age and often completely envelop the shoots. The main spine is slightly bent back, the others are spread out and up to 2 inches long.
The flowers that open during the day are yellow and 5 to 6 centimeters in diameter. The flower cup and the flower tube are felty and thorny. The spherical, densely thorny fruits have a diameter of 2.5 to 6 centimeters and contain obovate, flattened, black, shiny seeds with a finely wetted surface.
Distribution, systematics and endangerment
Bergerocactus emoryi is distributed in southern California and in the northwest of Baja California near the coast at altitudes of up to about 60 meters.
The first plants were collected in California by John Leconte and Charles Parry and sent to George Engelmann . He was first described as Cereus emoryi in 1852 . Nathaniel Lord Britton and Joseph Nelson Rose established the genus Bergerocactus in 1909 .
Another nomenclature synonym is Echinocereus emoryi (Engelm.) Rümpler (1885).
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. 91 .
- Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd Edition. tape IV . Gustav Fischer Verlag, Stuttgart New York 1984, ISBN 3-437-30383-X , p. 2123 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 76.
- ↑ George Engelmann: Notes on the Cereus giganteus of South Eastern California and some other Californian Cactaceae . In: American Journal of Science and Arts . 2nd episode, Volume 14, 1852, p. 338 ( online ).
- ^ Nathaniel Lord Britton, Joseph Nelson Rose The Genus Cereus and its Allies in North America . In: Contributions from the United States National Herbarium . Volume 12, 1909, p. 435 ( online ).
- ↑ Bergerocactus emoryi in the IUCN Red List of Threatened Species 2013.2. Posted by: Burquez Montijo, A., Butterworth, C., Baker, M., Porter, JM, Puente, R. & Felger, RS, 2010. Retrieved January 20, 2014.
