Escobaria alversonii

Escobaria alversonii
	Escobaria alversonii
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Cacteae
Genre :	Escobaria
Type :	Escobaria alversonii
Scientific name
	Escobaria alversonii
	( JMCoult. ) NPTaylor

Escobaria alversonii is a species of plant in the genus Escobaria from the cactus family(Cactaceae). Thespecific epithet alversonii honors the British mineral explorer Andrew H. Alverson (1845–1916). English common names are "Foxtail Beehive Cactus" and "Foxtail Cactus".

description

Escobaria alversonii usually sprouts and forms underground, cylindrical offshoots. The more or less spherical shoots reach heights of growth of up to 7 centimeters. The eight to ten central spines have a dark red or black tip and are 1.2 to 1.6 inches long. The twelve to 18 white radial spines have lengths of 1.2 to 2 centimeters.

The flowers are magenta to pink and reach a diameter of about 3.2 centimeters. The ellipsoidal fruits are green.

Distribution, systematics and endangerment

Escobaria alversonii is distributed in the United States in the southeast of the state of California and in adjacent Arizona .

The first description as Cactus radiosus var. Alversonii by John Merle Coulter was published in 1894. Nigel Paul Taylor placed it in 1997 as a species in the genus Escobaria .

Other nomenclature synonyms are Mammillaria alversonii (JMCoult.) Zeiss. (1895), Mammillaria radiosa var. Alversonii (JMCoult.) K.Schum. (1898), Mammillaria radiosa f. alversonii clamp (JMCoult.) (1907), Mammillaria arizonica var. alversonii (JMCoult.) Davidson & Moxley (1923), Coryphantha alversonii (JMCoult.) Orcutt (1926), Mammillaria vivipara var. alversonii (JMCoult.) LDBenson (1950) , Coryphantha vivipara var. Alversonii (JMCoult.) LDBenson (1969) and Escobaria vivipara var. Alversonii (JMCoult.) DRHunt (1978).

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 . Eugen Ulmer KG, Stuttgart 2005, ISBN 3-8001-4573-1 , p. 272 .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 8.
^ John Merle Coulter: Preliminary Revision of the North American species of Cactus, Anhalonium and Lophophora . In: Contributions from the United States National Herbarium . Volume 3, Number 2, June 1894, p. 122, (online) .
↑ Cactaceae Consensus Initiatives . Number 3, 1997, p. 10.
↑ Escobaria alversonii in the IUCN Red List of Threatened Species 2013.2. Listed by: Porter, JM, 2010. Retrieved December 17, 2013.

Web links

Commons : Escobaria alversonii - collection of images, videos and audio files

Photos of Escobaria alversonii

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 8.

[2] John Merle Coulter: Preliminary Revision of the North American species of Cactus, Anhalonium and Lophophora . In: Contributions from the United States National Herbarium . Volume 3, Number 2, June 1894, p. 122, (online) .

[3] Cactaceae Consensus Initiatives . Number 3, 1997, p. 10.

[4] Escobaria alversonii in the IUCN Red List of Threatened Species 2013.2. Listed by: Porter, JM, 2010. Retrieved December 17, 2013.