Pterocactus valentinii
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Pterocactus valentinii |
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Pterocactus valentinii is a species of the genus Pterocactus from the cactus family(Cactaceae).
description
Pterocactus valentinii remains small and forms only a few above-ground shoots. The shoots often have long, subterranean and thin parts and are not very branched. The above-ground, green and cylindrical shoots are 4 to 8 inches long and 1 to 1.5 inches in diameter. 25 to 30 radiating and glassy thorns that are 0.4 to 2 centimeters long sit on the non-woolly areoles . They cannot be differentiated into central and radial spines.
The yellow to copper-colored, sometimes reddish flowers are up to 4 inches long and 3 inches wide. The yellowish pink fruits are up to 2 centimeters in diameter and are thorny.
Distribution, systematics and endangerment
Pterocactus valentinii is distributed in southern Argentina in the provinces of Mendoza , Neuquén and Chubut on the Patagonian plains at altitudes of up to 1000 meters. The species was first described in 1899 by Carlos Luis Spegazzini .
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. 555 .
- Michael Kießling, Josef Pöschl: Tephrocactus and other prickly pear cacti . Self-published by Michael Kießling, Schnaitsee 2000, p. 272 .
Individual evidence
- ↑ Anales de la Sociedad Cientifica Argentina , Edition 48, pp. 51-52, 1899 ( online ).
- ↑ Pterocactus valentinii in the IUCN Red List of Threatened Species 2014.3. Posted by: Kiesling, R., 2013. Retrieved January 17, 2015.
