Turbinicarpus knuthianus
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Turbinicarpus knuthianus |
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| ( Boed. ) V. John & Říha |
Turbinicarpus knuthianus is a species of plant in the genus Turbinicarpus from the cactus family(Cactaceae).
description
Turbinicarpus knuthianus usually grows individually with bluish green, somewhat depressed spherical bodies and mostly has fiber roots. The bodies reach heights of 3 to 6 centimeters and diameters of 3.5 to 7 centimeters. Their conical cusps are 5 to 7 millimeters high. There are 1 to 2 white, slightly upwardly curved central spines with a length of 10 to 16 millimeters. The 15 to 20 radiating radial spines are white, slender, straight and 6 to 8 millimeters long.
The light magenta colored flowers have a darker central stripe. They are 2.3 to 2.8 centimeters long and 1.8 to 2.5 centimeters in diameter. The almost spherical, yellowish green fruits are up to 9 millimeters long and reach a diameter of 7 to 8 millimeters.
Systematics, distribution and endangerment
Turbinicarpus knuthianus is common in the Mexican state of San Luis Potosí . It was first described as Echinocactus knuthianus in 1930 by Friedrich Bödeker . Václav John and Jan Říha (* 1947) placed them in the genus Turbinicarpus in 1983 .
Synonyms are Gymnocactus knuthianus (Boed.) Backeb. , Pediocactus knuthianus (Boed.) Halda , Thelocactus knuthianus (Boed.) Borg , Neolloydia knuthianus (Boed.) FMKnuth and Turbinicarpus saueri subsp. knuthianus (Boed.) Lüthy .
Turbinicarpus knuthianus is listed in Appendix I of the Washington Convention on Endangered Species .
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 630 .
Individual evidence
- ↑ Monthly of the German Cactus Society . Volume 2, p. 139, 1930
- ↑ Kaktusy Volume 19, No. 1, p. 22, Brno 1983
