Mammillaria polyedra
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Mammillaria polyedra |
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Mammillaria polyedra is a species of the genus Mammillaria in the cactus family(Cactaceae). Thespecific epithet polyedra means' (Greek hedra seat) place, surface; multifaceted '.
description
Mammillaria polyedra first grows individually, later forming groups. The deep green shoots are spherical to short cylindrical in shape. They grow up to 30 centimeters high with a diameter of 10 to 12 centimeters. The pyramidal-shaped warts have six to seven sides. They carry plenty of milky juice . The axillae are covered with wool and bristles. Central spines are completely absent. The 4 to 6 radial spines are straight, brownish yellow with a purple tip. They become 0.6 to 2.5 centimeters long, with the top ones always being the strongest and longest.
The pink flowers are up to 2.5 centimeters long. The broad, club-like fruits are red. They contain brown seeds .
Distribution, systematics and endangerment
Mammillaria polyedra is common in the Mexican states of Guerrero , Oaxaca, and Puebla .
It was first described in 1832 as by Carl Friedrich Philipp von Martius . Synonyms of Mammillaria polyedra Mart. are Cactus polyedrus (Mart.) Kunze (1891) and Mammillaria polyedra var. polygona (Salm-Dyck) E. Kuhn (1979, nom. inval. ICBN -Article 33.3)
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 . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 402 .
- 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. 102 ( 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. 150 .
Individual evidence
- ↑ Description of some new nopaleas . In: Nova Acta Physico-Medica Academiae Caesareae Leopoldino-Carolinae Naturae Curiosorum Exhibentia Ephemerides sive Observationes Historias et Experimenta… Volume 16, number 1, 1832, p. 326. (online)
- ↑ Mammillaria polyedra in the IUCN Red List of Threatened Species 2013.2. Posted by: Arias, S., Cházaro, M. & Terrazas, T., 2009. Retrieved December 27, 2013.
