Aloe arborescens

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

blossoms

Distribution area

Aloe arborescens is a plant from the genus of aloe ( Aloe ) in the subfamily of asphodeloideae (Asphodeloideae). The specific epithet arborescens is derived from the Latin word arbor for 'tree' and refers to the tree-like appearance of the species.

description

Vegetative characteristics

Aloe arborescens grows trunk-forming and strongly branching. The trunk reaches a length of 2 to 3 meters and is up to 30 centimeters thick at the base. It is covered with perennial, dead leaves over a length of 30 to 60 centimeters. The triangular leaves form a dense rosette . The cloudy green to gray-green leaf blade is 50 to 60 inches long and 5 to 7 inches wide. The fixed teeth on the leaf edge are 3 to 5 millimeters long and 5 to 20 millimeters apart. They are usually curved towards the tip of the leaf.

Inflorescences and flowers

The usually simple inflorescence has an occasional twig and is 60 to 80 centimeters long. The dense, conical to elongated conical grapes are 20 to 30 inches long and 10 to 12 inches wide. The ovate-pointed to blunt bracts have a length of 15 to 20 millimeters and are 10 to 12 millimeters wide. The scarlet flowers are on 35 to 40 millimeter long peduncles . The flowers are 40 millimeters long and rounded at their base. At the level of the ovary , they have a diameter of 7 millimeters. Above this they are slightly narrowed and finally widened towards the mouth. Your outer tepals are not fused together. The stamens and the style stick out about 5 millimeters from the flower.

genetics

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

Systematics and distribution

Aloe arborescens is widespread in Malawi , Mozambique , Zimbabwe and South Africa from sea level to altitudes of 2800 meters. It typically grows on rocky slopes and is occasionally found in thick bush.

The first description by Philip Miller was published in 1768.

The following taxa were included as synonymous in the species: Aloe perfoliata var. Η L. (1753), Aloe fruticosa Lam. (1783), Aloe arborea Medik. (1783, nom. Illeg. ICBN -Article 53.1), Aloe perfoliata var. Arborescens Aiton (1789), Catevala arborescens medic. (1789), Aloe frutescens Salm-Dyck (1817), Aloe arborescens var. Frutescens (Salm-Dyck) Link (1821), Aloe natalensis J.M.Wood & MSEvans (1901), Aloe arborescens var. Natalensis (JMWood & MSEvans) A. Berger (1908), Aloe arborescens var. Milleri A. Berger (1908), Aloe arborescens var. Pachythyrsa A.Berger (1908).

The following subspecies are distinguished:

Aloe arborescens subsp. arborescens
Aloe arborescens subsp. mzimnyati van Jaarsv. & AEvan Wyk

Aloe arborescens subsp. mzimnyati
Aloe arborescens subsp. mzimnyati is smaller throughout the habit. The leaves are 12 to 21 inches long and 0.8 to 1 inches wide. The slightly club-shaped flowers are 22 to 25 millimeters long. Their color varies from orange-red to orange to various shades of yellow.

The first description of this subspecies by Ernst Jacobus van Jaarsveld and Abraham Erasmus van Wyk was published in 2005. It is widespread in the South African province of KwaZulu-Natal northeast of Krantzkop on the Mzimnyati River, mainly on quartzitic sandstone cliffs at heights of around 500 meters and is only known from the area where the type was found .

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. 660 .
Leonard Eric Newton: Aloe arborescens . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 111 .

Individual evidence

↑ Gideon F. Smith, Colin C. Walker, Estrela Figueiredo: What's in a name: epithets in Aloe L. (Asphodelaceae) and what to call the next new species . In: Bradleya . Volume 28, 2010, p. 87.
^ Philip Miller: The Gardeners Dictionary . 8th edition, 1768, without page numbers, number 3 ( online ).
^ Leonard Eric Newton: Aloe arborescens . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 111 .
↑ Ernst Jacobus van Jaarsveld, Abraham Erasmus van Wyk: A new subspecies of Aloe arborescens from the Mzimnyati river, KwaZulu-Natal . In: Aloe . Volume 42, 2005, pp. 40-42.

Web links

Commons : Aloe arborescens - collection of images, videos and audio files

Aloe arborescens in the Red List of South African Plants

[1] Gideon F. Smith, Colin C. Walker, Estrela Figueiredo: What's in a name: epithets in Aloe L. (Asphodelaceae) and what to call the next new species . In: Bradleya . Volume 28, 2010, p. 87.

[2] Philip Miller: The Gardeners Dictionary . 8th edition, 1768, without page numbers, number 3 ( online ).

[3] Leonard Eric Newton: Aloe arborescens . In: Urs Eggli (Hrsg.): Succulent lexicon. Monocotyledons . Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3662-7 , pp. 111 .

[4] Ernst Jacobus van Jaarsveld, Abraham Erasmus van Wyk: A new subspecies of Aloe arborescens from the Mzimnyati river, KwaZulu-Natal . In: Aloe . Volume 42, 2005, pp. 40-42.