Parodia oxycostata
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Parodia oxycostata |
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| ( Buining & Brederoo ) Hofacker |
Parodia oxycostata is a species of plant in the genus Parodia in the cactus family(Cactaceae). The specific epithet oxycostata is derived from the Greek word oxys for 'sharp' and the Latin word costatus for 'ribbed' and refers to the sharply ribbed plants.
description
Parodia oxycostata grows individually and rarely forms small groups. The gray-green flattened spherical to spherical shoots reach heights of growth of up to 9 centimeters and diameters of 9 to 12 centimeters. The six to twelve sharp-edged ribs have chin-like projections. The circular areoles , which are initially white , later turn gray and are finally bare. The flattened and twisted thorns are reddish brown to bright yellow and become lighter with age. The single, mostly downward-pointing central spine has a length of up to 2 centimeters. The mostly two radial spines are 1.6 to 2.5 inches long. One of them is pointing downwards. Occasionally there are up to eight additional thorns up to 6 millimeters in length.
The bell-shaped, sometimes even urn-shaped, flowers reach lengths of 4 to 5 centimeters and diameters of 4.5 to 7 centimeters. Your pericarpel and the flower tube are covered with scales, white wool and reddish brown bristles. The scars are red. The fruits, which are covered with yellowish gray wool and reddish brown bristles, are 2.5 to 2.7 centimeters long and contain helmet-shaped, shiny black seeds .
Distribution, systematics and endangerment
Parodia oxycostata is common in the Brazilian state of Rio Grande do Sul .
The first description as Notocactus oxycostatus by Albert Frederik Hendrik Buining and Arnold J. Brederoo was published in 1973. Andreas Hofacker placed the species in the genus Parodia in 1998 . Another nomenclature synonym is Peronocactus oxycostatus (Buining & Brederoo) Doweld (1999, incorrect name ICBN -Article 11.4).
The following subspecies are distinguished:
- Parodia oxycostata subsp. oxycostata
- Parodia oxycostata subsp. gracilis (F.Ritter) Hofacker
In the Red List of Threatened Species of IUCN is the species as " Vulnerable (VU) ", d. H. listed as endangered.
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 509 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 174.
- ↑ In: Krainz: Kakteen . 1973, delivery 50/51, C VIc.
- ^ Andreas Hofacker: Further nomenclatural adjustments in Frailea and Parodia . In: Cactaceae Consensus Initiatives . Number 6, 1998, p. 12.
- ↑ Parodia oxycostata in the IUCN Red List of Threatened Species 2013.2. Posted by: Larocca, J. & Machado, M., 2010. Retrieved January 19, 2014.
