Peniocereus johnstonii
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| Peniocereus johnstonii | ||||||||||||
| Britton & Rose |
Peniocereus johnstonii is a species of plant in the genus Peniocereus from the cactus family(Cactaceae). The specific epithet honors the American botanist Ivan Murray Johnston . Spanish common names are "Matraca", "Pitayita" and "Saramatraca".
description
Peniocereus johnstonii grows as a shrub with straddling or climbing, hardly branched shoots and reaches heights of growth of up to 3 meters. The large, fleshy roots are bulbous. The slender, delicate shoots are 1 to 2 centimeters in diameter. There are three to five slightly wavy ribs . The thorns are brown to black. One to three awl, 4 to 8 millimeter long central spines and eight to eleven radial spines are formed.
The fragrant, white, funnel-shaped flowers open at night and are up to 15 centimeters long. The pericarpell is humped and woolly. The egg-shaped, red fruits are up to 6 inches long. They are edible.
Distribution, systematics and endangerment
Peniocereus johnstonii is distributed on the Mexican peninsula Baja California and neighboring islands in the Gulf of Mexico at altitudes from 0 to 500 m. The first description was in 1922 by Nathaniel Lord Britton and Joseph Nelson 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. 523 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 122.
- ^ Journal of the Washington Academy of Sciences . Volume 12, 1922, p. 329, (online) .
- ↑ Peniocereus johnstonii in the Red List of Threatened Species of the IUCN 2013.2. Posted by: León de la Luz, JL, Hernández, HM & Gómez-Hinostrosa, C., 2012. Retrieved January 25, 2014.