Pereskia diaz-romeroana
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Pereskia diaz-romeroana |
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Pereskia diaz-romeroana is a species of plant in the genus Pereskia from the cactus family(Cactaceae). The specific epithet honors the Bolivian naturalist Belisario Diaz Romero (1870–1940). A Spanish common name is "Uturunku".
description
Pereskia diaz-romeroana grows shrubby and reaches heights of 0.5 to 3 meters. The spindle- to spherical roots are fleshy. The gray or brown, upright and overhanging branches have peeling bark and measure about 2 centimeters in diameter. The indistinctly stalked leaves are elliptical to ovate. The leaf blade is 2 to 3.5 inches long and 1 to 2.2 inches wide. The leaflet- shaped leaf veins have three to four branches. The midrib protrudes from the bottom. There are two to five, 15 to 22 millimeter long thorns on the branches . On older branches there can be up to twelve areoles each . They are straight to slightly bent back, of unequal length and a length of 5 to 30 millimeters.
The flowers are terminal or appear laterally. Sometimes they stand alone, but usually in groups of two or three. The stalked or sessile, pink to bright red flowers reach a diameter of 1 to 2 centimeters. The ovary is arranged in the middle to almost on top. The broad, obovate, shiny black, fleshy, soft fruits are covered with matted, white hairs at their tips and have a persistent flower remnant. They reach a diameter of up to 13 millimeters.
The number of chromosomes is 2n = 22.
Distribution, systematics and endangerment
Pereskia diaz-romeroana is widespread in the Bolivian departments of Cochabamba and Santa Cruz in open dry forests at altitudes of 1100 to 2000 meters.
It was first described in 1950 by Martín Cárdenas .
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. 527-528 .
Individual evidence
- ^ BE Leuenberger : Pereskia (Cactaceae) . In: Memoirs of the New York Botanical Garden . Volume 41, 1986, p. 73.
- ↑ Pereskia diaz-romeroana at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ Lilloa . Volume 23, 1950, pp. 15-18.
- ↑ Pereskia diaz-romeroana in the IUCN Red List of Threatened Species 2013.2. Listed by: Lowry, M., 2013. Retrieved May 16, 2014.