Peniocereus macdougallii
| Peniocereus macdougallii | ||||||||||||
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| Peniocereus macdougallii | ||||||||||||
| Cutak |
Peniocereus macdougallii is a species of plant in the genus Peniocereus from the cactus family(Cactaceae). The specific epithet honors Thomas Baillie MacDougall (1895–1973).
description
Peniocereus macdougallii grows as a shrub with shoots that branch out unregulated above the soil surface and reaches heights of 2.4 to 3 meters. The long brown roots are bulbous. The shoots are cylindrical. Older shoots are brown, triangular and up to 6.5 centimeters in diameter. Flowering shoots are tinged with dark green purple, triangular and up to 130 centimeters long. There are usually three corrugated ribs . The thorns are conspicuous in different ways. They are gray with a darker tip, conical to needle-like and 1.5 to 20 millimeters long.
The slightly fragrant, greenish white flowers open at night. They are 8.5 to 9 inches long and 5.5 inches in diameter. The pericarpel is humped and covered with brownish wool and bristle-like thorns. The obverse pear-shaped fruits are scarlet.
Distribution, systematics and endangerment
Peniocereus macdougallii is common in the Mexican states of Oaxaca and Chiapas . It was first described in 1947 by Ladislaus Cutak .
In the Red List of Threatened Species of IUCN is the species as " Endangered (EN) ," d. H. listed as endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 524 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 143.
- ^ Cactus and Succulent Journal . Volume 19, 1947, p. 87.
- ↑ Peniocereus macdougallii in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Arias, S., Ishiki, M. & Terrazas, T., 2009. Retrieved January 25, 2014.