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Kew Bulletin

, Volume 65, Issue 2, pp 279–303 | Cite as

New species of Dypsis and Ravenea (Arecaceae) from Madagascar

  • Mijoro Rakotoarinivo
  • John Dransfield
Article

Summary

Fourteen new species of palms (Arecaceae) from Madagascar are described and named, based on material collected over the last 15 years. Twelve species belong to the genus Dypsis, namely D. andilamenensis Rakotoarin. & J. Dransf., D. anjae Rakotoarin. & J. Dransf., D. betsimisarakae Rakotoarin. & J. Dransf., D. culminis Rakotoarin. & J. Dransf., D. dracaenoides Rakotoarin. & J. Dransf., D. gautieri Rakotoarin. & J. Dransf., D. gronophyllum Rakotoarin. & J. Dransf., D. jeremiei Rakotoarin. & J. Dransf., D. metallica Rakotoarin. & J. Dransf., D. reflexa Rakotoarin. & J. Dransf., D. sancta Rakotoarin. & J. Dransf. and D. vonitrandambo Rakotoarin. & J. Dransf. and two species belong to the genus Ravenea: R. beentjei Rakotoarin. & J. Dransf. and R. hypoleuca Rakotoarin. & J. Dransf. Despite the fact that most of these species have been recorded from protected areas that are difficult to access in the eastern region of Madagasacar, they are all threatened. Based on IUCN categories and criteria, seven are Critically Endangered and seven are Vulnerable.

Key Words

Arecaceae Dypsis Madagascar Palmae Palms Ravenea 

Notes

Acknowledgements

The authors wish to thank the following researchers who collected palms in Madagascar and shared their samples with the Kew Herbarium: Anja Byg, Jeremie L. Razafitsalama and Laurent Gautier. Special thanks to William J. Baker for his continuous encouragement, to Lucy Smith for having drawn all the plates of these new species and to Soraya Villalba for helping in the preparation of digital versions of the plates. We thank two anonymous reviewers for their constructive criticism.

References

  1. Britt, A. & Dransfield, J. (2005). Dypsis delicatula. Palms 49: 40 – 44.Google Scholar
  2. Dransfield, J. (2003). Dypsis turkii. Palms 47: 26 – 30.Google Scholar
  3. ____ & Beentje, H. J. (1995). The Palms of Madagascar. Royal Botanic Gardens, Kew.Google Scholar
  4. ____ & Marcus, J. (2002). Dypsis ‘stumpy’. Palms 46: 47 – 51.Google Scholar
  5. ____, Rakotoarinivo, M., Baker, W. J., Bayton R. P., Fisher, J. B., Horn, J. W., Leroy, B. & Metz, X. (2008). A new Coryphoid palm genus from Madagascar. Bot. J. Linn. Soc. 156: 79 − 91.CrossRefGoogle Scholar
  6. Hanski, I., Koivulehto, H., Cameron, A. & Rahagalala, P. (2007). Deforestation and apparent extinctions of endemic forest beetles in Madagascar. Biol. Lett. 3: 344 − 347.CrossRefPubMedGoogle Scholar
  7. Hodel, D. R. & Marcus, J. (2004). The White Powder Dypsis: A new species from cultivation. Palms 48: 90 − 93.Google Scholar
  8. IUCN (2001). IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland, Switzerland and Cambridge, UK.Google Scholar
  9. Moat, J. & Smith, P. (2007). Atlas de la végétation de Madagascar. Royal Botanic Gardens, Kew.Google Scholar
  10. Rakotoarinivo, M. (2008). A remarkable Ravenea from the montane forest of Andilamena, Madagascar. Palms 52: 11 − 17.Google Scholar
  11. ____, Ranarivelo, T. & Dransfield, J. (2007). A new species of Beccariophoenix from the High Plateau of Madagascar. Palms 51: 63 − 75.Google Scholar
  12. ____, Trudgen, M. S. & Baker, W. J. (2009). The palms of the Makira Protected Area, Madagascar. Palms 53: 125 − 146.Google Scholar

Copyright information

© The Board of Trustees of the Royal Botanic Gardens, Kew 2010

Authors and Affiliations

  1. 1.Royal Botanic GardensAmbodivoanjo IvandryMadagascar
  2. 2.Royal Botanic GardensRichmondTW9 3AB, UK

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