Pterocactus araucanus
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Pterocactus araucanus |
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| A.Cast. |
Pterocactus araucanus is a species of the genus Pterocactus from the cactus family(Cactaceae).
description
Pterocactus araucanus forms several spherical to pear-shaped shoot segments. They stand on top of each other in short chains, are gray-brown and are 3 to 4 centimeters long and 1 to 1.5 centimeters in diameter. The glochids are inconspicuous. The eight comb-like arranged thorns are yellowish with a dark tip and are up to 3 millimeters long.
The reddish brown flowers are up to 4 centimeters in diameter. The spherical fruits have a diameter of up to 2 centimeters.
Distribution, systematics and endangerment
Pterocactus araucanus is distributed in Argentina in the plains of the Neuquén provinces , in the western part of Río Negro and in the northwestern part of Chubut at altitudes of 200 to 600 meters. The species was first described in 1964 by Alberto Castellanos .
In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (LC) ". H. listed as not endangered. The development of the populations is considered stable.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 552-553 .
Individual evidence
- ^ A. Castellanos: Revisión de las Cactáceas Argentinas II. Pterocactus . In: Revista de la Facultad de Ciencias Agrarias. Universidad Nacional de Cuyo . Volume 2, 1964, pp. 6-8.
- ↑ Pterocactus araucanus in the IUCN Red List of Threatened Species 2014.3. Posted by: Kiesling, R., 2013. Retrieved January 16, 2015.
