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Kew Bulletin

, Volume 63, Issue 2, pp 169–191 | Cite as

Morphology-based phylogeny and revision of Prepusa and Senaea (Gentianaceae: Helieae) — rare endemics from eastern Brazil

  • Maria Fernanda Calió
  • José Rubens Pirani
  • Lena Struwe
Article

Summary

A morphology-based phylogeny and taxonomic revision of Prepusa Mart. and Senaea Taub. are presented. Based on studies of herbarium collections, five species of Prepusa and two species of Senaea are recognised. All are endemic to montane habitats in the Brazilian states of Bahia, Espírito Santo, Minas Gerais and Rio de Janeiro. Morphological descriptions, identification keys, illustrations and distribution maps for each species are provided. Prepusa and Senaea are morphologically, geographically, and phylogenetically isolated within Helieae, and their close relationship is supported by 6-merous flowers. Phylogenetic analyses of 33 morphological characters using both parsimony and Bayesian methods provide a consistent picture of the relationships of Prepusa and Senaea. The two genera are monophyletic and sister to one another. There is some support for the relationships within Prepusa.

Keywords

distribution Neotropics Phylogeny Prepusa revision Senaea taxonomy 

Resumo

São apresentadas a filogenia morfológica e as revisões taxonômicas de Prepusa Mart. e Senaea Taub. Baseado no estudo de coleções de herbários, cinco espécies de Prepusa e duas de Senaea são reconhecidas. Todas são endêmicas a habitats montanos dos estados brasileiros da Bahia, Espírito Santo, Minas Gerais e Rio de Janeiro. São apresentados descrições morfológicas, chaves de identificação, ilustrações e mapas da distribuição de cada espécie. Prepusa e Senaea são morfológica, geográfica e filogeneticamente isolados entre as Helieae e a presença de flores 6-meras sustenta sua proximidade filogenética. Análises filogenéticas de 33 caracteres morfológicos usando parcimônia e métodos Bayesianos apresentam um quadro consistente das relações de Prepusa e Senaea. Os gêneros são monofiléticos e irmãos entre si. Há sustentação para as relações entre as espécies de Prepusa.

Notes

Acknowledgements

This research was supported by NSF (grant 317612 to LS), New Work Consortium (planning grant to LS and JRP), FAPESP (Ph.D. fellowship 03/10918 – 3 to MFC), and IAPT Research grant (2006, to MFC). We thank Jason R. Grant for help coding morphological features of Macrocarpaea, Daniela Zappi and Inês Cordeiro for suggesting groups of plants with similar patterns of distribution, Richard Winkworth for helping with analyses, Philip Miarmi for providing the maps, Bobbi Angell for specimen illustrations, and all herbaria and their staff mentioned under Material and Methods for loans. We also thank Thomas Waytt and the two anonymous reviewers for comments and suggestions.

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Copyright information

© The Board of Trustees of the Royal Botanic Gardens, Kew 2008

Authors and Affiliations

  • Maria Fernanda Calió
    • 1
  • José Rubens Pirani
    • 1
  • Lena Struwe
    • 2
  1. 1.Departamento de Botânica, Instituto de BiociênciasUniversidade de São Paulo, Rua do matãoSão PauloBrazil
  2. 2.Department of Ecology, Evolution and Natural ResourcesRutgers UniversityNew BrunswickUSA

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