Cephalocleistocactus chrysocephalus
| Cephalocleistocactus chrysocephalus | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Cephalocleistocactus | ||||||||||||
| F. Knight | ||||||||||||
| Scientific name of the species | ||||||||||||
| Cephalocleistocactus chrysocephalus | ||||||||||||
| F. Knight |
Cephalocleistocactus chrysocephalus is the only plant species of the monotypic genus Cephalocleistocactus in the cactus family(Cactaceae). The botanical name of the genus refers to the contrary to the genus Cleistocactus trained cephalium .
description
The shrubby, branched Cephalocleistocactus chrysocephalus reaches a height of up to 5 meters. The slender, dark green trunks have a diameter of 3 to 5 centimeters with 11 to 14, up to 5 millimeter high ribs, which have a V-shaped furrow on the flanks on both sides of the areoles. From the 2 to 3 millimeter large areoles arise about 6 yellowish, 0.3 to 3 centimeters long central spines and about 15 thin, upright, up to 0.7 centimeters long radial spines. The cephalium, which initially only appears to the side, later envelops the entire tip of the shoot. It grows to 1 meter long and 3 to 4 centimeters wide. The cephalium consists of yellowish, flexible to bristle-like, 3 to 4 centimeters long thorns.
The tubular, yellow to red flowers are up to 2 inches long. The reddish fruits are up to 2 inches long and have a diameter of up to 3 inches. They contain small, shiny black seeds .
Distribution, systematics and endangerment
Cephalocleistocactus chrysocephalus is common in Inquisivi in the Bolivian department of La Paz at altitudes of 2300 to 2900 meters on only one previously known location. The first description of the species and the only kind took place in 1959 by Friedrich Ritter . Cephalocleistocactus chrysocephalus is closely related to the genus Cleistocactus .
In the Red List of Threatened Species of the IUCN , the species is called " Data Deficient (DD) ", i. H. with insufficient data.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 101-102 .
Individual evidence
- ↑ Succulenta p. 107ff., 1959
- ↑ Cephalocleistocactus chrysocephalus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Lowry, M., 2012. Retrieved February 16, 2014.