Aloe leptosiphon

Aloe leptosiphon
Systematics
	Monocots
Order :	Asparagales (Asparagales)
Family :	Grass trees (Xanthorrhoeaceae)
Subfamily :	Affodilla family (Asphodeloideae)
Genre :	Aloes ( aloe )
Type :	Aloe leptosiphon
Scientific name
	Aloe leptosiphon
	A. Berger

Aloe leptosiphon is a species of the genus Aloes in the subfamily of the Affodilla plants (Asphodeloideae). The specific epithet leptosiphon is derived from the Greek words leptos for 'thin' and siphon for 'tube' and refers to the narrow flower tube of the species.

description

Vegetative characteristics

Aloe leptosiphon grows without a stem or with a short stem, is single or sprouting and then forms small groups. Their trunks are up to 50 centimeters long. The approximately 16 ovate-lanceolate leaves form dense rosettes . The glossy green leaf blade is 20 to 35 inches long and 5 to 7 inches wide. There are occasionally scattered, elongated, whitish spots on the upper side of the leaf. There are numerous spots on the underside of the leaf. The light green teeth on the leaf margin are 2 millimeters long and 8 to 10 millimeters apart. The yellow leaf sap is brownish dry.

Inflorescences and flowers

The inflorescence is simple or usually has one or two branches. It reaches a length of 40 by 60 centimeters. The dense conical-cylindrical grapes are 10 to 20 inches long and 5 to 7 inches wide. The egg-shaped, pointed bracts are 10 to 11 millimeters long and 4 to 5 millimeters wide. The bright red to orange-red flowers have a greenish yellow mouth or are completely yellow. They stand on 8 to 10 millimeter long flower stalks . The flowers are 25 to 30 millimeters long and briefly narrowed at their base. At the level of the ovary , the flowers have a diameter of 5 to 6 millimeters, above they are slightly narrowed. Your tepals are not fused together over a length of 8 to 10 millimeters. The stamens and the stylus barely protrude from the flower.

genetics

The number of chromosomes is . ${\ displaystyle 2n = 14}$

Systematics, distribution and endangerment

Aloe leptosiphon is found in the northeast of Tanzania on steep rocky slopes, often in the grass at altitudes of 1200 to 1675 meters.

The first description by Alwin Berger was published in 1905. A synonym is Aloe greenwayi Reynolds (1964).

Aloe Leptosiphon is in the endangered Red List species the IUCN as " Critically Endangered (CR) ", d. H. classified critically endangered.

proof

literature

Susan Carter , John J. Lavranos , Leonard E. Newton , Colin C. Walker : Aloes. The definitive guide . Kew Publishing, Royal Botanic Gardens, Kew 2011, ISBN 978-1-84246-439-7 , pp. 257 .
Leonard Eric Newton: Aloe leptosiphon . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 152 .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 136.
^ Botanical yearbooks for systematics, plant history and plant geography . Volume 36, Number 1, 1905, p. 66 ( online ).
↑ Aloe Leptosiphon in the endangered Red List species the IUCN 2012. Posted by: the Eastern Arc Mountains and Coastal Forests CEPF Plant Assessment Project Participants, 2009. Accessed October 17, 2012th

Web links

Photos of Aloe leptosiphon at www.arkive.org

[1] Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 136.

[2] Botanical yearbooks for systematics, plant history and plant geography . Volume 36, Number 1, 1905, p. 66 ( online ).

[3] Aloe Leptosiphon in the endangered Red List species the IUCN 2012. Posted by: the Eastern Arc Mountains and Coastal Forests CEPF Plant Assessment Project Participants, 2009. Accessed October 17, 2012th