Advertisement

Brittonia

, Volume 65, Issue 1, pp 16–41 | Cite as

A taxonomic revision of Pleiochiton (Melastomataceae, Miconieae)

  • Marcelo ReginatoEmail author
  • José Fernando Andrade Baumgratz
  • Renato Goldenberg
Article

Abstract

The genus Pleiochiton has frequently been recognized by dubious characters and seldom treated in taxonomic and floristic surveys. Nevertheless, monophyly of the genus has been highly supported by recent molecular and morphological data, and it can be morphologically recognized by the epiphytic growth and succulent roots. Following the current circumscription, the genus has 12 species, all endemic to the Atlantic Forest sensu stricto in eastern Brazil. The species occur in well conserved middle elevation forests and most are narrowly distributed, with four recorded from only a single locality. In this paper we present a taxonomic revision of the genus and provide an identification key, distribution maps, descriptions, and illustrations for all species. The new species P. amorimii is described, and the known distribution of the genus is expanded northwards, into the “brejos de altitude” of Pernambuco state.

Key Words

Atlantic Rain Forest Clidemia epiphyte Leandra taxonomy 

Notes

Acknowledgments

We are thankful to the curators of cited herbaria for loan of specimens; New York Botanical Garden SEM’s laboratory and Fabián A. Michelangeli for help with SEM work; Jardim Botânico do Rio de Janeiro for accommodation and access to herbarium; the two anonymous manuscript reviewers and the journal editor for their very helpful comments. Authors were recipient of grants from CNPq–Brazil (master degree for M.R. and “Produtividade em Pesquisa” for R.G. and J.F.A.B.).

References

  1. Brade, A. C. 1945. Melastomataceae Novae III. Rodriguésia 18: 3–7.Google Scholar
  2. Chiea, S. C. 1990. Flora Fanerogâmica da Reserva do Parque Estadual das Fontes do Ipiranga (São Paulo, Brasil) – Melastomataceae. Hoehnea 17: 127–151.Google Scholar
  3. Cogniaux, A. 1886-1888. Melastomataceae. In: C. F. P. Martius, A. G. Eichler & I. Urban (eds.), Flora Brasiliensis, vol. 14(3, 4): 1–510. Frid. Fleischer, Lipsiae.Google Scholar
  4. ———. 1891. Melastomataceae. Pp. 1-1256. In: A. De Candolle & C. De Candolle (eds.), Monographiae Phanerogamarum, vol. 7: 1–1256. G. Masson, Paris.Google Scholar
  5. Fiaschi, P. & J. R. Pirani. 2009. Review of plant biogeographic studies in Brazil. Journal of Systematics and Evolution 47(5): 477–496.CrossRefGoogle Scholar
  6. Glaziou, A. F. M. 1908. Plantae Brasiliae centralis a Glaziou lectae. Mémoires de la Société Botanique de France 3: 1–661.Google Scholar
  7. Goldenberg, R., C. M. F. Souza & H. B. Dequech. 2005. Clidemia, Ossaea e Pleiochiton (Melastomataceae) no estado do Paraná, Brasil. Hoehnea 32: 453–466.Google Scholar
  8. ———, D. S. Penneys, F. Almeda, W. S. Judd & F. A. Michelangeli. 2008. Phylogeny of Miconia (Melastomataceae): patterns of stamen diversification in a megadiverse neotropical genus. International Journal of Plant Sciences 24: 315–327.Google Scholar
  9. Gray, A. 1854. United States exploring expedition during the years 1838–1842. Botany Phanerogamia 1: New York, George P. Putnam & Co.Google Scholar
  10. Hoehne, F. C. 1922. Melastomataceae dos hervários Horto “Oswaldo Cruz”, Museu Paulista, etc. Anexos das Memórias do Instituto de Butantan 1: 1–198.Google Scholar
  11. IBGE. 1992. Manual técnico da Vegetação Brasileira. Manuais Técnicos de Geociências 1: Fundação Instituto Brasileiro de Geografia e Estatística, Rio de Janeiro.Google Scholar
  12. Martin, C. V., D. P. Little, R. Goldenberg & F. A. Michelangeli. 2008. A phylogenetic evaluation of Leandra (Miconieae, Melastomataceae): a polyphyletic genus where the seeds tell the story, not the petals. Cladistics 24(3): 315–327.CrossRefGoogle Scholar
  13. Michelangeli, F. A., D. S. Penneys, J. Giza, D. Soltis, M. H. Hils & J. D. Skean. 2004. A preliminary phylogeny of the tribe Miconieae (Melastomataceae) based on nrITS sequence data and its implications on inflorescence position. Taxon 53: 279–290.CrossRefGoogle Scholar
  14. Reginato, M., M. R. T. Boeger & R. Goldenberg. 2009a. Comparative anatomy of the vegetative organs in Pleiochiton, with emphasis on the adaptations to epiphytism. Flora 204: 782–790.CrossRefGoogle Scholar
  15. ———, R. Goldenberg & A. B. Martins. 2009b. Pleiochiton Naudin ex A.Gray. Pp. 116–118. In: M.G.L. Wanderley, G.J. Shepherd, T.S. Melhem, A.M. Giulietti & S.E. Martins (eds.), Flora fanerogâmica do estado de São Paulo, vol. 6: 116–118. FAPESP, São Paulo.Google Scholar
  16. ———, F. A. Michelangeli & R. Goldenberg. 2010a. Phylogeny of Pleiochiton A. Gray (Melastomataceae, Miconieae): Total evidence. Botanical Journal of The Linnean Society 162: 423–434.CrossRefGoogle Scholar
  17. ———, R. Goldenberg & J. F. A. Baumgratz. 2010b. Taxonomic notes on Pleiochiton (Melastomataceae – Miconieae). Rodriguésia 61(1): 115–117.Google Scholar
  18. Renner, S. S. 1986. The neotropical epiphytic Melastomataceae: Phytogeographic patterns, fruit types, and floral biology. Selbyana 9: 104–111.Google Scholar
  19. Triana, J. 1871. Les Mélastomacées. Transactions of the Linnean Society of London 28: 1–188.CrossRefGoogle Scholar
  20. Wurdack, J. J. 1962. Melastomataceae of Santa Catarina. Sellowia 14: 109–217.Google Scholar
  21. ———. 1986. Atlas of hairs for neotropical Melastomataceae. Smithsonian Contributions to Botany 63: 1–80.CrossRefGoogle Scholar

Copyright information

© The New York Botanical Garden 2012

Authors and Affiliations

  • Marcelo Reginato
    • 1
    Email author
  • José Fernando Andrade Baumgratz
    • 2
  • Renato Goldenberg
    • 3
  1. 1.The New York Botanical GardenBronxUSA
  2. 2.Diretoria de Pesquisa CientíficaInstituto de Pesquisas Jardim Botânico do Rio de JaneiroJardim BotânicoBrasil
  3. 3.Centro Politécnico, Pós-Graduação em BotânicaUniversidade Federal do ParanáCuritibaBrasil

Personalised recommendations