Pereskiopsis porteri
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| Pereskiopsis porteri | ||||||||||||
| ( Brandegee ex FACWeber ) Britton & Rose |
Pereskiopsis porteri is a species of plant in the genus Pereskiopsis from the cactus family(Cactaceae). Spanish common names are "Alcahuesar", "Alcájer", "Alcajes", "Rajamatraca", "Rosa Amarilla" and "Xoconoxtle".
description
Pereskiopsis porteri grows shrubby to tree-shaped , is sometimes spread out and sprawling and reaches heights of 2 to 5 meters. The branches are ascending, the clear trunk is lignified and measures up to 3 centimeters in diameter. The strong, lignified, bare, green shoots are 10 to 40 centimeters long and reach a diameter of 0.5 to 1 centimeter. The egg-shaped to rounded or lanceolate leaf blade of the different, green, glabrous, fleshy leaves is 1.2 to 5 inches long and 0.5 to 3 inches wide. The gray areoles are often covered with hairs and abundant reddish glochids . The one to three straight, blackish to gray thorns are sometimes missing on young shoots. There are up to 16 in one areole on the trunk. The thorns are 0.5 to 5 inches long.
The wide-opening flowers reach a diameter of 4 to 8 centimeters and are 4 to 5 centimeters long. Your pericarpel is covered with glochids and hair, but rarely has thorns. The ellipsoidal to obovate, reddish to yellowish orange fruits sometimes proliferate . They are 3 to 5.5 inches long and 0.4 to 1.2 inches in diameter.
The number of chromosomes is 2n = 110.
Distribution, systematics and endangerment
Pereskiopsis porteri is distributed in the Mexican states of Nayarit , Sinaloa , Sonora and Baja California Sur up to an altitude of 400 meters.
It was first described as Opuntia porteri in 1898 by Frédéric Albert Constantin Weber . Nathaniel Lord Britton and Joseph Nelson Rose put the species in 1907 in the genus Pereskiopsis, which they newly established .
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. 533 .
Individual evidence
- ↑ Pereskiopsis porteri at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ In: Désiré Georges Jean Marie Bois: Dictionnaire d'Horticulture . 1898, p. 899.
- ↑ Pereskiopsis, a new genus of Cactaceae . In: Smithsonian miscellaneous collections . Volume 50, 1907, p. 332, (online) .
- ↑ Pereskiopsis porteri in the IUCN Red List of Threatened Species 2014.3. Posted by: Porter, JM & Van Devender, T., 2013. Retrieved December 28, 2014.