Ortegocactus macdougallii
| Ortegocactus macdougallii | ||||||||||||
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Ortegocactus macdougallii in culture |
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| Scientific name of the genus | ||||||||||||
| Ortegocactus | ||||||||||||
| Alexander | ||||||||||||
| Scientific name of the species | ||||||||||||
| Ortegocactus macdougallii | ||||||||||||
| Alexander |
Ortegocactus macdougallii is the only plant species of the monotypic genus Ortegocactus in the cactus family(Cactaceae). The botanical name of the genus honors the Ortega family from the village of San José Lachigurí, who helped in the discovery of the plant. The specific epithet honors Thomas Baillie MacDougall (1895–1973), the discoverer of the species.
description
Ortegocactus macdougallii forms loose cushions. The spherical to short cylindrical shoots are pale gray-green and 3 to 4 centimeters in diameter. The spirally arranged warts are low, somewhat flattened, rhomboid and tiny spotted. The areoles are woolly in the upper part, have thorns and are sometimes furrowed. The black to whitish, upright central spine has a dark tip and is 4 to 5 millimeters long. The 7 to 8 radial spines are whitish with dark tips and have a length of 5 to 10 millimeters.
The yellow, funnel-shaped flowers appear from the axillae . They open during the day, are 2 to 3 centimeters long and 1.8 to 2.5 centimeters in diameter. The flower cup is covered with wool, but has no scales.
The dull red fruits , dry when ripe, are spherical or somewhat elongated and have a persistent flower remnant. They contain almost spherical, black to brown, dotted seeds .
Distribution, systematics and endangerment
Ortegocactus macdougallii is common in the Mexican state of Oaxaca , where it grows on limestone rocks. The species was found in the winter of 1951/52 by Thomas Baillie MacDougall (1895–1973) near the village of San José Lachiguirí. The first description of the species and its single species was carried out in 1961 by Edward Johnston Alexander .
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. 487 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 143.
- ↑ Edward Johnston Alexander: Ortegocactus a unique genus . In: Cactus and Succulent Journal . Volume 33, Los Angeles 1961, p. 39.
- ↑ Ortegocactus macdougallii in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Goettsch, BK, 2013. Retrieved December 28, 2013.
