Alluaudia
| Alluaudia | ||||||||||||
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Alluaudia procera |
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| Scientific name | ||||||||||||
| Alluaudia | ||||||||||||
| ( Drake ) Drake |
Alluaudia is a genus of plants ofthe Didiereaceae family within the order of the carnation-like (Caryophyllales). The botanical name of the genus honors the French politician and scholar François Alluaud (1778–1866).
description
Alluaudia species grow with a few emerging shoots, bushy or tree-shaped with a trunk up to 50 cm in diameter and reach heights of 10 to 15 m. The needle-like thorns stand individually on the shoots. Below the thorns, arranged in a spiral, a single, obovate or semicircular leaf appears on new shoots. At a later stage, two opposite leaves grow on short shoots each year, with their narrow side facing up.
The species Alluaudia dumosa deviates from this growth in that the reduced thorns and leaves are transient.
The large or small, cymous or gold-like inflorescences have white, pale green, yellow or reddish single flowers with a diameter of up to 1 cm. The 8 to 10 stamens are bent back and the 3 to 4 large stigma lobes are spreading. The fruits are 2 to 6 mm in size and contain seeds with aril .
distribution
The species of the genus are common in the south and southwest of Madagascar .
Systematics
The genre was established in 1903 by Emmanuel Drake del Castillo . The type species is Didierea procera Drake . As a synonym for the genus Alluaudia applies Didierea subg. Alluaudia Drake (1901).
The genre is divided into two sections:
- Section Alluaudia : leafy, with upright, thick and little branched shoots; Chromosome number 2n = 240
- Alluaudia ascendens (Drake) Drake
- Alluaudia montagnacii Rough
- Alluaudia procera (Drake) Drake (Syn .: Didierea procera Drake )
- Section Androyella Z.A.Rabesa : scaly leaves or leafy plant with overhanging, thin, strongly branched shoots; Chromosome number 2n = 48 or 2n = 192
- Alluaudia comosa (Drake) Drake
- Alluaudia dumosa (Drake) Drake
- Alluaudia humbertii Choux
swell
- DG Rowley : Alluaudia . In: Urs Eggli (Hrsg.): Succulent lexicon . tape 2 dicotyledons (dicotyledons). Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , p. 99 .
