Mammillaria humboldtii
| Mammillaria humboldtii | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mammillaria humboldtii |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Mammillaria humboldtii | ||||||||||||
| C. Ehrenb. |
Mammillaria humboldtii is a species of the genus Mammillaria in the cactus family(Cactaceae). The specific epithet honors the German naturalist Alexander von Humboldt .
description
Mammillaria humboldtii grows solitary to many-headed. The depressed, spherical and light green shoots are up to 7 centimeters high and reach an equally large diameter. The cylindrically shaped warts have a rounded tip. You are without milky juice . The axillae are covered with wool and white bristles. Central spines are completely absent. The up to 80 or more radial spines are uneven, radiate in a star shape and white. They are 4 to 6 millimeters long.
The flowers are bright purple-pink. They are 2.5 inches long and 1.5 inches in diameter. The red fruits are club-shaped. They contain black seeds .
Distribution, systematics and endangerment
Mammillaria humboldtii is common in the Mexican state of Hidalgo .
The first description was in 1840 by Carl August Ehrenberg . Synonyms are Ebnerella humboldtii (C.Ehrenb.) Buxb. (1951), Chilita humboldtii (C.Ehrenb.) Buxb. (1954, nom. Inval. ICBN -Article 33.3) and Escobariopsis humboldtii (C.Ehrenb.) Doweld (2000).
In the Red List of Threatened Species of IUCN is the species as " Critically Endangered (CR) ", d. H. listed as critically endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 388 .
- NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape IV . The Carnegie Institution of Washington, Washington 1923, p. 130 ( online ).
- Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 133 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Birkhäuser 2004, ISBN 3-540-00489-0 , p. 112.
- ↑ Four new mammillaries discovered and described by C. Ehrenberg . In: Linnaea . Volume 14, 1840, p. 378 (online) .
- ↑ Mammillaria humboldtii in the IUCN Red List of Threatened Species 2013.2. Listed by: Fitz Maurice, B, Fitz Maurice, WA, Hernández, HM, Sotomayor, M. & Smith, M., 2009. Retrieved December 25, 2013.
