Mammillaria chionocephala
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Mammillaria chionocephala on site |
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| JAPurpus |
Mammillaria chionocephala is a species of the genus Mammillaria in the cactus family(Cactaceae). Thespecific epithet chionocephala means '(lat. Chionocephalus) snow-headed, white-headed'.
description
Mammillaria chionocephala usually grows individually. The depressed, spherical, short cylindrical, light green shoots are 15 to 20 centimeters high and 9 to 10 centimeters in diameter. The closely standing, pyramidal-shaped warts do not contain any milky juice . The axillae are covered with plenty of white wool and bristles. The 2 to 4 central spines , sometimes 6, are white with a dark tip. They are 0.6 inches long. The bristle-like white 22 to 24 radial spines are 0.8 inches long.
The white to light pink flowers are up to 1 centimeter long and large in diameter. The crimson fruits contain brown seeds .
Distribution and systematics
Mammillaria chionocephala is common in the Mexican states of Nuevo León , Coahuila , Durango , San Luis Potosí, and Zacatecas .
The first description was in 1906 by Joseph Anton Purpus .
Synonyms are the following described species and varieties:
Mammillaria hahniana var. Chionocephala (JAPurpus) Kuhn (1981, nom. Inval. ICBN -Article 33.3), Mammillaria formosa subsp. chionocephala (JAPurpus) DRHunt (1998), Mammillaria ritteriana Boed. (1929) and Mammillaria caerulea R.T. Craig (1945).
proof
literature
- Edward F. Anderson : The Great Cactus Lexicon . 2nd Edition. Eugen Ulmer KG, Stuttgart 2011, ISBN 978-3-8001-5964-2 , pp. 375 .
- Ulises Guzmán: Catálogo de cactáceas mexicanas . Universidad National Autonoma de México, Mexico City 2007, ISBN 970-9000-20-9 , pp. 119 .
Individual evidence
- ↑ JA Purpus: Mammillaria chionocephala JA Purpus n. Sp. In: Monthly for cactus science . Vol. 16, 1906, p. 41 ( online ).
