Pilosocereus leucocephalus
| Pilosocereus leucocephalus | ||||||||||||
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Pilosocereus leucocephalus |
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| Pilosocereus leucocephalus | ||||||||||||
| ( Poselg. ) Byles & GDRowley |
Pilosocereus leucocephalus is a species of plant in the genus Pilosocereus from the cactus family(Cactaceae). The specific epithet leucocephalus means 'with a white head'. Common names are "Cabeza de Viejo", "Órgano", "Pitayón" and "Tuno".
description
Pilosocereus leucocephalus grows tree-like with a short, clearly defined trunk, upright or ascending green to blue-green shoots with a diameter of 6 to 10 centimeters and a height of 2 to 5 meters. There are 7 to 12 ribs. The initially brownish thorns turn gray later. The single central spine is 2 to 3 centimeters long. The 8 to 12 slender radial spines are 1 to 2 inches long. The flowering part of the shoots close to the tip or to the side is clearly distinguishable and comprises 3 to 4 ribs, from whose areoles numerous silky, white, 4 to 10 centimeters long hairs arise.
The tubular to bell-shaped flowers are more or less pink to whitish. They are up to 6 inches long. The spherical fruits reach a diameter of up to 4 centimeters and contain a magenta colored pulp.
Distribution, systematics and endangerment
The distribution area of Pilosocereus leucocephalus extends from east to south of Mexico and from there further south to Guatemala , Nicaragua and Honduras . The first description as Pilocereus leucocephalus was published in 1853 by Heinrich Poselger (1818-1883). Ronald Stewart Byles and Gordon Douglas Rowley placed them in the genus Pilosocereus in 1957 . A synonym is Cephalocereus leucocephalus (Poselg.) Britton & Rose .
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. 541-542 .
Individual evidence
- ^ Cactus and Succulent Journal of Great Britain . Volume 19, p. 66, London 1957
- ↑ Pilosocereus leucocephalus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Ishiki, M., Arias, S. & Gómez-Hinostrosa, C., 2009. Retrieved January 5, 2014.
