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Published In: Supplementum Plantarum 52–53, 316–317. 1781[1782]. (Apr 1782) (Suppl. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/10/2009)
Acceptance : Accepted
Taxon Profile     (Last Modified On 7/6/2019)
Generic Distribution: not endemic to the Malagasy Region
Generic Species Diversity and Endemism Status: has been evaluated
No. of species in Fl. Madagasc.: not published
Accepted Published Species: 48 (47 endemic, 1 indigenous non-endemic)
Estimated Unpublished Species: 17 endemic
Estimated Total Species: 65 (64 endemic, 1 indigenous non-endemic)
Additional Taxonomic Work: in progress
Species Level Data Entry: complete

Two main broad groups of species can be distinguished on the basis of a preliminary, unpublished phylogenetic study, possibly representing 2 separate migration events to Madagascar: Supergroup 1: plants with relatively large flowers and relatively small racemose or paniculate inflorescences; and Supergroup 2: plants generally with small flowers in large well-branched paniculés cymes. These supergroups can be further divided into 3 and 7 subgroups respectively, that each possess a suite of differential characters and coherent biogeography. In addition at least two species appear to belong outside these groups (and separate from each other), and include the liana D. bracteolata the only species in Madagascar that also occurs elsewhere, and D. xerophila a shrub or small tree from the south-west, and characterised by typical xeromorphic features including the development of brachyblasts.

Recently it has become clear that the existing taxonomy of the genus requires revision and the delimitation of certain species is problematic. Collaborative efforts are now underway to address these issues, and will be incorporated here as they progress.

Numerous spp are exploited for their timber and are known in Madagascar as "Bois de rose" (Rosewood) or "Palissandre" (Palisander). Many of these are threatened through over-exploitation and illegal logging.

Additional summary information on the genus is available here, and a summary table of the species is provided here.

Evaluated by: P.B. Phillipson & S. Crameri (2019)
Compiled or updated by: M. Rabarimanarivo & P.B. Phillipson (2013); P.B. Phillipson & S. Crameri (2018, 9)



Lower Taxa


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