Mammillaria winterae
| Mammillaria winterae | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mammillaria winterae |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Mammillaria winterae | ||||||||||||
| Boed. |
Mammillaria winterae is a species of the genus Mammillaria in the cactus family(Cactaceae). The specific epithet winterae honors the nursery owner Hildegard Winter (1893–1975), the sister of Friedrich Ritter .
description
Mammillaria winterae usually grows individually or occasionally in groups. The light green to blue-green shoots are depressed spherical. They measure 20 to 30 centimeters in diameter. The warts are keeled square and contain milk juice . The axillae are initially bare, later covered with thick wool but without bristles. The 4 central spines are strongly needle-like, straight or slightly curved. They are up to 3 centimeters long and are light gray or slightly reddish, with a brown tip. The radial spines are completely absent.
The yellowish white flowers have a sulfur yellow central stripe. They grow up to 3 inches long and 2.5 inches in diameter. The club-shaped fruits are red. They contain brown seeds .
Distribution, systematics and endangerment
Mammillaria winterae is common in the Mexican states of Nuevo León , Coahuila, and Tamaulipas .
It was first described in 1929 by Friedrich Bödeker .
The following subspecies are distinguished:
-
Mammillaria winterae subsp. aramberri D.R.Hunt :
The first description was in 1997 by David Richard Hunt . A synonym is Mammillaria crassimammilis Repp. (1987). The subspecies grows in groups. The warts are narrow and the thorns are only 8 millimeters long. -
Mammillaria winterae subsp. winterae :
Synonyms are Mammillaria zahniana Boed. & F.Ritter (1929) and Mammillaria freudenbergi Repp. (1987). The nominate form almost always grows individually. The thorns are up to 3 inches long.
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. 415 .
- Ulises Guzmán, Salvador Arias, Patricia Dávila: Catálogo de cactáceas mexicanas . Universidad Nacional Autónoma de México, Mexico City 2003, ISBN 970-9000-20-9 , pp. 165 .
Individual evidence
- ↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 258.
- ↑ Monthly of the German Cactus Society . Vol. 1, Berlin 1929, p. 119.
- ↑ DR Hunt: Mammillaria Postscripts . Volume 6, 1997, p. 10.
- ↑ Mammillaria winterae in the Red List of Threatened Species of IUCN 2013.2. Posted by: Fitz Maurice, B, Fitz Maurice, WA, Hernández, HM, Sotomayor, M. & Smith, M., 2009. Retrieved December 27, 2013.
