Haageocereus decumbens

Haageocereus decumbens
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Trichocereeae
Genre :	Haageocereus
Type :	Haageocereus decumbens
Scientific name
	Haageocereus decumbens
	( Vaupel ) Backeb.

Haageocereus decumbens is a species of plant in the genus Haageocereus from the cactus family(Cactaceae). The specific epithet decumbens means 'lying down'.

description

Haageocereus decumbens grows spread out or ascending and often forms richly branched groups with slender shoots that can reach a diameter of up to 5 centimeters. There are about 20 low ribs . The one or two light to dark brown central spines are directed downwards and up to 5 centimeters long. The up to 30 and more needle-like yellowish radial spines have a length of 5 to 8 millimeters.

The white flowers reach a diameter of 4.5 centimeters and a length of up to 8 centimeters.

Distribution, systematics and endangerment

Haageocereus decumbens is common in Peru in the Arequipa region near Chala and Mollendo at altitudes of 200 to 700 meters.

It was first described as Cereus decumbens in 1913 by Friedrich Karl Johann Vaupel . Curt Backeberg placed the species in the genus Haageocereus in 1934 . Nomenclatory synonyms are Borzicactus decumbens (Vaupel) Britton & Rose (1920) and Binghamia decumbens (Vaupel) Werderm. (1937, incorrect name ICBN -Article 11.4).

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. 332-333 .

Individual evidence

^ Botanical yearbooks for systematics, plant history and plant geography . Volume 50, number 2-3, Beiblatt 111, Leipzig 1913, pp. 18-19 (online) .
↑ Leaves for cactus research . Part 6, Volksdorf 1934, [p. 2].
^ Haageocereus decumbens in the IUCN Red List of Threatened Species 2013.2. Posted by: Cáceres, F., Faundez, L. & Walter, HE, 2011. Retrieved March 15, 2014.

[1] Botanical yearbooks for systematics, plant history and plant geography . Volume 50, number 2-3, Beiblatt 111, Leipzig 1913, pp. 18-19 (online) .

[2] Leaves for cactus research . Part 6, Volksdorf 1934, [p. 2].

[3] Haageocereus decumbens in the IUCN Red List of Threatened Species 2013.2. Posted by: Cáceres, F., Faundez, L. & Walter, HE, 2011. Retrieved March 15, 2014.