Gymnocalycium kroenleinii
| Gymnocalycium kroenleinii | ||||||||||||
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| Scientific name | ||||||||||||
| Gymnocalycium kroenleinii | ||||||||||||
| R.Kiesling , Rausch & O.Ferrari |
Gymnocalycium kroenleinii is a species of plant in the genus Gymnocalycium from the cactus family(Cactaceae). Thespecific epithet honors Marcel Kroenlein (1928–1994), the longtime director of the Jardin Exotique de Monaco .
description
Gymnocalycium kroenleinii grows individually with light green, brownish pink tinged, flattened spherical shoots that reach a diameter of up to 6 centimeters and form a short beet root. The eight to ten ribs are notched across and divided into conspicuous, 7 mm long, chin-like bumps. The awl, irregularly curved thorns are brown-gray and brown at their base. There is a single central spine up to 2 centimeters long, which can also be missing. The seven to nine (rarely from three) radial spines are close to protruding and up to 1.7 centimeters long. One of them is directed downwards and a little longer, the others sideways.
The short and wide funnel-shaped, pink or whitish flowers reach a length of up to 3 centimeters and a diameter of the same amount. The stamens are pink, styles and stigmas are white. The cone-shaped pericarpel is 7 mm long and 5 mm wide. The spherical, violet to pink-gray fruits , slightly tapered towards the ends, have a diameter of up to 1.2 centimeters. They jump up vertically and contain pot-shaped, matt black seeds with a large hilum and a size of 1.2 to 1.4 mm in length and 1.0 to 1.2 mm in thickness.
Propagation can only take place by sowing, since the species does not sprout.
Distribution, systematics and endangerment
Gymnocalycium kroenleinii is widespread in the Argentine province of La Rioja in the Sierra de Malanzán at an altitude of about 1250 to 1450 m on stony ground.
It was first described in 2000 by Roberto Kiesling , Walter Rausch and Omar Ferrari .
In the Red List of Threatened Species of the IUCN , the species is listed as " Least Concern (LC) ". H. listed as not endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 318 .
- Detlev Metzing: Gymnocalycium kroenleinii R. Kiesling & al. In: Cacti and other succulents . Volume 62, Number 6, 2011, pp. XXIIIf.
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 129.
- ↑ Cacti and other succulents . Volume 51, Number 12, 2000, pp. 315-318.
- ↑ Gymnocalycium kroenleinii in the IUCN Red List of Threatened Species 2013.2. Posted by: Trevisson, M., Demaio, P. & Perea, M., 2010. Retrieved March 13, 2014.