Grusonia bradtiana
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Grusonia bradtiana |
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| Grusonia bradtiana | ||||||||||||
| ( JMCoult. ) Britton & Rose |
Grusonia bradtiana is a species of plant in the genus Grusonia fromthe cactus family (Cactaceae). The specific epithet bradtiana honors George M. Bradt, editor of The Southern Florist and Gardener magazine. Spanish common names are "Organillo" and "Viejo".
description
Grusonia bradtiana grows low, branching and forms dense, impenetrable mats up to 1 meter high. The green shoot sections have a diameter of 4 to 7 centimeters. There are eight to ten low, humped ribs . The white areoles on it measure 3 to 5 millimeters in diameter. The linear, fleshy, green leaf rudiments reach a diameter of up to 8 millimeters and quickly disappear. The 15 to 25 initially brownish yellow thorns later become whitish. They are needle-like, round or slightly flattened and 1 to 3 centimeters long. Occasionally the longest of them faces downwards.
The yellow flowers reach lengths of 3 to 4 centimeters. The ellipsoidal fruits have a strongly recessed navel at their end.
Distribution, systematics and endangerment
Grusonia bradtiana is common in the Mexican state of Coahuila at altitudes of 150 to 1450 meters.
The first description as Cereus bradtianus was in 1896 by John Merle Coulter . Nathaniel Lord Britton and Joseph Nelson Rose put the species in the genus Grusonia in 1919 . A synonym is Opuntia bradtiana (JMCoult.) K.Brandegee (1897).
In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (LC) ". H. listed as not endangered. The future development of the populations is unknown.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 305 .
Individual evidence
- ^ A b John Merle Coulter: Preliminary Revision of the North American Species of Echinocactus, Cereus, and Opuntia . In: Contributions from the United States National Herbarium . Volume 3, Number 7, April 1896. P. 406, (online) .
- ^ NL Britton , JN Rose : The Cactaceae . Descriptions and Illustrations of Plants of the Cactus Family . tape I . The Carnegie Institution of Washington, Washington 1919, p. 215 .
- ↑ Grusonia bradtiana in the IUCN Red List of Threatened Species 2014.3. Posted by: Hernández, HM & Bárcenas Luna, R., 2013. Accessed December 28, 2014.
