Didierea
| Didierea | ||||||||||||
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Didierea madagascariensis |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Didierea | ||||||||||||
| Baill. |
Didierea is a genus of plants of the Didiereaceae familywithin the order of the carnation-like (Caryophyllales). The genus was named after the French naturalist Alfred Grandidier (1836–1921).
description
The plants grow as strongly pungent, dioecious and thorny bushes or tree-like, with individual thick shoots that can be up to 6 meters high. On the shoots there are spirally arranged warts on which areoles are located, from which rosettes of narrow and ephemeral leaves arise. On the warts 4 to 8, rarely only 1 or up to 12 pieces, stiff, needle-like and radial thorns are formed.
The flowers in umbels emerge from the areoles of the upper shoot parts. 8 stamens are formed. The 3 to rarely 4 spread scars are large and notched. The fruits are triangular.
The number of chromosomes is 2n = 48.
distribution
The species of the genus are common in the southwest and south of Madagascar .
Systematics
The genre was established in 1880 by Henri Ernest Baillon . The type species of the genus is Didierea madagascariensis Baill .
The genus contains two types:
- Didierea madagascariensis Baill. : It occurs in southwest Madagascar.
- Didierea trollii Capuron & Rauh : It occurs in southern Madagascar.
swell
- DG Rowley: Didierea . In: Urs Eggli (Hrsg.): Succulent lexicon . tape 2 : Dicotyledonous plants (dicotyledons). Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , p. 101 .
Individual evidence
- ^ Bulletin Mensuel de la Société Linnéenne de Paris. , Volume 1, pp. 258–259, Paris ( online )
- ↑ a b Rafaël Govaerts (Ed.): Didierea. In: World Checklist of Selected Plant Families (WCSP) - The Board of Trustees of the Royal Botanic Gardens, Kew . Retrieved April 20, 2020.
