Mammillaria peninsularis
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| ( Britton & Rose ) Orcutt |
Mammillaria peninsularis is a species of the genus Mammillaria in the cactus family(Cactaceae). The specific epithet peninsularis means 'growing on a peninsula'.
description
Mammillaria peninsularis grows individually or in groups, with the succulent plant bodies barely protruding above the soil surface. The spherical, flattened shoots are blue-green and up to 10 centimeters in diameter. The warts are square, protruding and pointed. They contain plenty of milky juice . The axillae are initially covered with white wool and later bare. Central spines are usually completely absent. Of the 4 to 8 radial spines, one is usually quite central and stiff. They are light brown with a dark tip and 6 millimeters long.
The light yellow or greenish flowers are up to 1.5 centimeters long, with the same diameter. The fruits are red and contain brown seeds .
Distribution, systematics and endangerment
Mammillaria peninsularis is only found on the southernmost tip of the peninsula in the Mexican state of Baja California Sur .
It was first described in 1923 as Neomammillaria peninsularis by Nathaniel Lord Britton and Joseph Nelson Rose . Charles Russell Orcutt introduced the species to Mammillaria in 1926 . Another synonym is Mammillaria gummifera var. Peninsularis (Britton & Rose) E. Kuhn (1981, nom. Inval. ICBN -Article 33.3).
In the Red List of Threatened Species of IUCN is the species as " Endangered (EN) ," d. H. listed as endangered.
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 400 .
- Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 147 .
Individual evidence
- ^ 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. 85 ( online ).
- ↑ Cactography . National City and San Diego, CA, 1926, p. 8.
- ↑ Mammillaria peninsularis in the IUCN Red List of Threatened Species 2013.2. Posted by: León de la Luz, JL, Hernández, HM & Gómez-Hinostrosa, C., 2012. Accessed December 27, 2013.