Aloe dorotheae

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

blossoms

Aloe dorotheae is a species of aloes in the subfamily of the Affodil family (Asphodeloideae). The specific epithet dorotheae honors Dorothy Westhead from London.

description

Vegetative characteristics

Aloe dorotheae grows short trunk-forming, sprouting and forms dense groups. The shoots are up to 25 centimeters long. The approximately 20 lanceolate, pointed leaves form rosettes . The bright green leaf blade , which becomes reddish in the dry season, is up to 30 centimeters long and 5 to 6 centimeters wide. There are scattered white spots on the smooth surface of the leaf. The hooked, white-tipped teeth on the narrow, white, cartilaginous leaf margin are 3 to 5 millimeters long and 10 to 15 millimeters apart. The leaf sap is dry yellow.

Inflorescences and flowers

The simple inflorescence - rarely one to three branches are formed - is 40 to 60 centimeters long. The rather dense, conical-cylindrical grapes are 10 to 25 centimeters long. The ovoid-pointed bracts are 3 millimeters long and 2 millimeters wide. The coral-red flowers turn greenish yellow or completely yellow towards the tip. They stand on 6 millimeter long flower stalks . The flowers are 27 to 33 millimeters long and briefly narrowed at their base. At the level of the ovary , they have a diameter of 7 millimeters. Above it are slightly narrowed, then widened to 8 millimeters and finally again slightly narrowed towards its mouth. Your outer tepals are not fused together over a length of 10 to 12 millimeters. The stamens and the pen stand out 4 to 5 millimeters from the flower.

genetics

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

Systematics, distribution and endangerment

Aloe dorotheae is widespread in Tanzania in humus pockets on boulders at altitudes of 600 to 685 meters.

The first description by Alwin Berger was published in 1908. Aloe harmsii A. Berger (1908) is a synonym .

Aloe dorotheae 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. 418 .
Leonard Eric Newton: Aloe Dorotheae . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 133 .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 69.
↑ Alwin Berger: Liliaceae-Asphodeloideae-Aloineae . In: Adolf Engler (ed.): The plant kingdom. Regni vegetablilis conspectus . Issue 33, Wilhelm Engelmann, Leipzig 1908, pp. 263-264 (online) .
↑ Aloe dorotheae in the Red List of Threatened Species of the IUCN 2012. Posted by: the Eastern Arc Mountains and Coastal Forests CEPF Plant Assessment Project Participants, 2009. Accessed August 15, 2012th

Web links

Commons : Aloe dorotheae - collection of images, 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. 69.

[2] Alwin Berger: Liliaceae-Asphodeloideae-Aloineae . In: Adolf Engler (ed.): The plant kingdom. Regni vegetablilis conspectus . Issue 33, Wilhelm Engelmann, Leipzig 1908, pp. 263-264 (online) .

[3] Aloe dorotheae in the Red List of Threatened Species of the IUCN 2012. Posted by: the Eastern Arc Mountains and Coastal Forests CEPF Plant Assessment Project Participants, 2009. Accessed August 15, 2012th