Alluaudia dumosa
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Alluaudia dumosa |
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| Alluaudia dumosa | ||||||||||||
| ( Drake ) Drake |
Alluaudia dumosa is a species of plant in the genus Alluaudia in the Didiereaceae family. The species name 'dumosa' (from Latin 'dumosus') means 'bushy, growing as a bush'.
description
Alluaudia dumosa initially grows as an upright shrub. Later the shoots become prostrate and finally the plants grow tree-shaped. They reach heights of 2 to 6 meters. The thick and fleshy shoots are covered with tiny, scattered and weak, black thorns . These are up to 2 mm in size. The tender, fleshy leaves are almost round and soon fall off. They become 5 to 10 mm long and 2 to 3 mm in diameter.
The whitish flowers appear in small, cymous inflorescences and are up to 5 cm in size. The fruits are elongated.
The number of chromosomes is 2n = about 192 or about 144.
Distribution and systematics
Alluaudia dumosa is widespread in the southeast of Madagascar , in the area between Ambovombe and Ampanihy .
The first description of Alluaudia dumosa done as Didierea dumosa 1901 by Emmanuel Drake del Castillo . In 1903 the same author placed the species in the genus Alluaudia, which he newly established .
The position of the species within the genus is unique because of its bare shoots.
literature
- DG Rowley : Alluaudia . In: Urs Eggli (Ed.): Succulents Lexicon Volume 2 Dicotyledonous plants (dicotyledons). Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , pp. 99-100.
Individual evidence
- ↑ Alluaudia dumosa at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ In: Comptes Rendus Hebdomadaires des Séances de l'Academie des Sciences Paris, 133: 241, 1901
- ^ In: Bulletin du Muséum d'Histoire Naturelle Paris, ix. 37, 1903.
