Opuntia pachyrrhiza
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| HMHern. , Gómez-Hin. & Bárcenas |
Opuntia Pachyrrhiza is a species in the genus of Opuntia ( Opuntia ) from the family of the cactus (Cactaceae). The specific epithet pachyrrhiza means '(greich, pachys, thick, strong) and (Greek rhiza, root) with strong roots'.
description
Opuntia pachyrrhiza grows as a small, little branched shrub and reaches heights of 35 to 40 centimeters. Most of the only one to three shoots appear directly from the bulbous, succulent rhizome . The rhizome is up to 40 centimeters long and 12 centimeters in diameter. The shoots are occasionally a little branched and then creep. They die in drought or cold. The elliptical, lanceolate or obovate shoot sections are up to 35 centimeters long, 16 centimeters wide and 5 to 8 millimeters thick. They are flat to slightly folded in and bare. Around the 2 to 4.5 apart elliptical areoles , the olive-green shoot sections are usually a little reddish. The numerous glochids are brown to yellow ocher. The thorns are initially light brown, later they become dark brown or gray with a brown tip. They are stiff, needle-like, flattened at their base and twisting above. The thorns are 0.5 to 4.5 centimeters (rarely up to 7 centimeters) long.
The bell-shaped, bright yellow flowers reach lengths of 4.5 to 9 centimeters and diameters of 4 to 8 centimeters. Your pericarpel is sometimes a little humped. The fruits are obovate and have a truncated tip.
Distribution, systematics and endangerment
Opuntia pachyrrhiza is common in the north of the Mexican state of San Luis Potosí .
The first description was in 2001 by Héctor Manuel Hernández , Carlos Gómez-Hinostrosa and Rolando T. Bárcenas . A synonym is Opuntia megarrhiza subsp. pachyrrhiza (HMHern., Gómez-Hin. & Bárcenas) U.Guzmán & Mandujano (2003).
Opuntia Pachyrrhiza was in the Red List of Threatened Species of IUCN in 2002 as " Vulnerable (VU) , d". H. endangered led. After the revision of the list in 2013 it is now called " Endangered (EN) ", i. H. listed as endangered. The distribution area covers about 4,500 km². The condition of the habitat is deteriorating and the number of species is reduced by human activities, etc. a. the collection of plants for medical use is threatened. The development of the population is seen as decreasing.
use
Anti-inflammatory agents are extracted from the rhizomes of the plants and used for bone fractures.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 469 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 176.
- ^ Héctor M. Hernández, Carlos Gómez-Hinostrosa, Rolando T. Bárcenas: Studies on Mexican Cactaceae. I. Opuntia pachyrrhiza, a New Species from the Chihuahuan Desert, Mexico . In: Novon . Volume 11, Number 3, 2001, pp. 309-314, JSTOR 3393035 .
- ↑ Opuntia pachyrrhiza in the IUCN Red List of Threatened Species 2014.3. Posted by: Hernández, HM, Gómez-Hinostrosa, C. & Goettsch, BK, 2013. Retrieved January 9, 2015.