Aloe helenae

Aloe helenae
	Aloe helenae
Systematics
	Monocots
Order :	Asparagales (Asparagales)
Family :	Grass trees (Xanthorrhoeaceae)
Subfamily :	Affodilla family (Asphodeloideae)
Genre :	Aloes ( aloe )
Type :	Aloe helenae
Scientific name
	Aloe helenae
	Danguy

Aloe helenae is a species of the genus Aloes in the subfamily of the Affodil family (Asphodeloideae). The specific epithet helenae honors Helen Decary, the wife of the French Raymond Decary .

description

Vegetative characteristics

Aloe helenae grows individually and as a stem. The upright trunk is up to 4 meters long and reaches a diameter of up to 20 centimeters. It is covered with the remains of dead leaves. The approximately 40 sword-shaped, strongly bent back leaves form dense rosettes . Your green leaf blade is up to 140 inches long and 12 to 15 inches wide. The piercing, light green teeth on the leaf margin are 2 to 3 millimeters long and 15 millimeters apart.

Inflorescences and flowers

The simple inflorescence is 40 to 60 centimeters long. The very dense, cylindrical-club-shaped grapes are 15 centimeters long and 9 centimeters wide. They consist of 300 to 400 flowers . The lanceolate-deltoid, pointed bracts have a length of 12 millimeters and are 6 millimeters wide. They are tipped red and thick and fleshy. The yellowish flowers have a reddish mouth. They stand on 2 to 3 millimeter long flower stalks . The basal cylindrical, bell-shaped flowers are 24 to 27 millimeters long and blunt at their base. At the level of the ovary they have a diameter of 4 millimeters. They are slightly narrowed above this and then widened towards their mouth. Your outer tepals are not fused together over a length of 12 to 15 millimeters. The stamens and the stylus are yellow and protrude from 9 to 10 millimeters out of flowering.

Systematics, distribution and endangerment

Aloe helenae is common in southern Madagascar on coastal sand and limestone.

The first description by Paul Auguste Danguy was published in 1929.

Aloe helenae is listed in Appendix I of the Washington Convention on Endangered Species . In the Red List of Threatened Species of IUCN is the species 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. 669 .
Leonard E. Newton: Aloe helenae . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 144 .

Individual evidence

↑ Urs Eggli, Leonard E. Newton: Etymological Dictionary of Succulent Plant Names . Springer, Berlin / Heidelberg 2010, ISBN 978-3-642-05597-3 , p. 106.
^ Bulletin du Muséum National d'Histoire Naturelle . Volume 2, Volume 1, Paris 1929, p. 433.
↑ Appendices I, II and III valid from April 3, 2012 . (accessed on August 23, 2012).
↑ Aloe helenae in the Red List of Threatened Species of the IUCN 2012. Posted by: World Conservation Monitoring Center, 1998. Accessed August 11, 2012th

Web links

Commons : Aloe helenae - 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. 106.

[2] Bulletin du Muséum National d'Histoire Naturelle . Volume 2, Volume 1, Paris 1929, p. 433.

[3] Appendices I, II and III valid from April 3, 2012 . (accessed on August 23, 2012).

[4] Aloe helenae in the Red List of Threatened Species of the IUCN 2012. Posted by: World Conservation Monitoring Center, 1998. Accessed August 11, 2012th