Brachycereus nesioticus

Brachycereus nesioticus
	Brachycereus nesioticus on Isla Bartolomé
Systematics
Order :	Clove-like (Caryophyllales)
Family :	Cactus family (Cactaceae)
Subfamily :	Cactoideae
Tribe :	Browningieae
Genre :	Brachycereus
Type :	Brachycereus nesioticus
Scientific name of the genus
	Brachycereus
	Britton & Rose
Scientific name of the species
	Brachycereus nesioticus
	( K.Schum. ) Backeb.

Brachycereus nesioticus is the only plant species of the monotypical genus Brachycereus in the cactus family(Cactaceae). The botanical name of the genus is derived from the Greek adjective "βραχύς" (brachys) for short and means short cereus . The epithet of the species is derived from the Greek noun "νήσος" (nesos) for island .

description

The multi-stemmed Brachycereus nesioticus forms dense cushions that reach a circumference of 2 meters. The more or less upright, cylindrical, sealed by mandrels wrapped drives have a growth height of 10 to 50 centimeters with a diameter of 3 to 5 centimeters. Its 16 to 22 ribs are low. The approximately 40 uneven, radiant, stiff to slightly flexible spines are yellowish and darken with age. The thorns are 0.5 to 5 inches long.

The cream-white, narrow-funneled flowers open during the day, are 6 to 11 centimeters long and have a diameter between 2 and 5.5 centimeters. The pericarpel is covered with numerous thorny areoles and small scales. The dark, fleshy fruits with permanent flower remnants are 1.5 to 3.5 centimeters long and between 1 and 1.4 centimeters in diameter. They contain brownish black, round to egg-shaped seeds 1 to 1.5 millimeters in diameter.

Distribution, systematics and endangerment

Brachycereus nesioticus is widespread on the islands of Isla Bartolomé , Isla Fernandina , Isla Genovesa , Isla Isabela , Isla Pinta and Isla San Salvador in the Galápagos Archipelago , where it grows on barren lava surfaces. The genus was established in 1920 by Britton and Rose . The first description of the species as Cereus nesioticus by Karl Moritz Schumann was published in 1902. Curt Backeberg placed them in the genus Brachycereus in 1936 .

Brachycereus nesioticus was in the Red List of Threatened Species of IUCN in 2002 as " Vulnerable (VU) , d". H. classified endangered. In 2013 the species is known as " Least Concern (LC) ", i. 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. 92 .
Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd Edition. tape II . Gustav Fischer Verlag, Stuttgart New York 1983, ISBN 3-437-30381-3 , p. 909-910 .
NL Britton , JN Rose : The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family . tape II . The Carnegie Institution of Washington, Washington 1920, p. 120 f .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 214.
↑ In: BL Robinson: Flora of the Galapagos Islands . In: Proceedings of the American Academy of Arts and Sciences . Volume 38, Number 4, 1902, p. 179 ( online ).
^ Curt Backeberg, Frederic Marcus Knuth: Kaktus-ABC, en Haandbog for Fagfolk og Amatorer . 1936, p. 176.
↑ Brachycereus nesioticus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Kling, M. & Tye, A., 2005. Retrieved December 31, 2013.

Web links

Commons : Brachycereus nesioticus - album with pictures, videos and audio files

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 214.

[2] In: BL Robinson: Flora of the Galapagos Islands . In: Proceedings of the American Academy of Arts and Sciences . Volume 38, Number 4, 1902, p. 179 ( online ).

[3] Curt Backeberg, Frederic Marcus Knuth: Kaktus-ABC, en Haandbog for Fagfolk og Amatorer . 1936, p. 176.

[4] Brachycereus nesioticus in the Red List of Threatened Species of the IUCN 2013.2. Posted by: Kling, M. & Tye, A., 2005. Retrieved December 31, 2013.