Leuchtenbergia
Leuchtenbergia principis
Leuchtenbergia principis is the only species of the monotypic genus Leuchtenbergia in the cactus family ( Cactaceae ). The botanical name honors Duke Maximilian de Beauharnais.
Description
Leuchtenbergia principis grows individually, sprouts and only occasionally reaches stature heights of 20 to 35 cm (rarely to 70 cm). The roots are large and fleshy, the shoots spherical to short cylindrical. Ribs are not available, but however conspicuous warts. The little leaf -like, 10 to 12 inches long warts are triangular in cross section. At its end sits a areole from which flattened, flexible, paper-like spines arise. The yellowish, often verdehten spines are up to 15 centimeters long.
The funnel-shaped, yellow, fragrant flowers appear at the proximal end of the areoles and open day. They are up to 8 inches long and have a diameter of 5 to up to 6 centimeters. Your Perikarpell is scaly. The egg-shaped to oblong fruits are dry at maturity. They are up to 3 inches long and clings to them a perennial flowers rest. In them are broadly oval, black to brown seeds 2.4 millimeters long and 2 millimeters in diameter.
Systematics, distribution and hazard
Leuchtenbergia principis is common in the Mexican states of Coahuila, Guanajuato, Hidalgo, Nuevo Leon, San Luis Potosi, Tamaulipas and Zacatecas in the vegetation of the Chihuahuan desert on limestone soils.
The first description of Leuchtenbergia principis was made in 1848 by William Jackson Hooker.
Leuchtenbergia principis was listed in 1992 in Appendix I of the CITES Convention. Given their prevalence but it was four years later in the Annex II - downgraded - in which all the cactus. Leuchtenbergia principis is on the Red List of Threatened Species IUCN as "Least Concern ( LC) ," ie, not compromised as in nature, classified.
Hybrids
Leuchtenbergia principis is probably closely related to the genus Ferocactus, with which it forms several hybrids ( × Ferobergia Ono & Y.Itô ):
- × Ferobergia ' Gil Tegel mountain ' ( Leuchtenbergia principis × Ferocactus acanthodes )
- × Ferobergia ' Eizan ' ( Ferocactus histrix × Leuchtenbergia principis )
- × Ferobergia ' Kosyu - Gyoku ' ( Leuchtenbergia principis × Ferocactus wislizeni var herrerae )
- × Ferobergia 'Violet ' ( Leuchtenbergia principis × Ferocactus fordii )
- × Ferobergia ' Rody ' ( Leuchtenbergia principis × Ferocactus gracilis )
Are closely related also to the genera Thelocactus ( × Thelobergia Hirao ) and Stenocactus ( × Echinobergia Mottram ).
Botanical history
Maybe William Jackson Hooker took the name Leuchtenbergia principis by Friedrich Ernst Ludwig von Fischer, who was from 1823 to 1850 director of the Botanical Garden of Saint Petersburg. In Karl Moritz Schumann editing the Cactaceae of 1894, the genus is therefore as Leuchtenbergia fish. et Hook. listed: " With regard to the author rights may be noted that it was first named by fishermen in the Petersburg Garden in honor of Prince Eugène de Beaumarchais, Duke of Leuchtenberg [ sic]. The first description but stirred ago by Hooker. In our current practice, the name must therefore also be attributed to the last author. "
Leuchtenbergia principis was to be found in European collections since 1846. Soon after the description by Hooker it seems some time ceased to be cultivated, and was considered a rarity. To the beginning of the 20th century around Leuchtenbergia principis, however, was again quite widespread in Europe.