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On the “Cangaço” route: a new species of Hymenaea (Leguminosae) from the Brazilian Caatinga

Summary

A new species of Hymenaea from the Caatinga of northeastern Brazil is described and illustrated. H. cangaceira is morphologically similar to H. martiana and H. longifolia, and its geographical distribution overlaps those of both species; however, it differs in the combination of glabrous, ovate to broadly-elliptic leaflets, a glabrous ovary, and relatively short, cylindrical fruit. The new species is well represented in the herbaria of northeastern Brazil. An identification key is provided to distinguish it from other species of Hymenaea that occur in the Caatinga region.

Resumo

Uma nova espécie de Hymenaea da Caatinga do Nordeste brasileiro é aqui descrita e ilustrada. H. cangaceira é morfologicamente similar às espécies H. martiana e H. longifolia e sua distribuição geográfica está sobrepostas as mesmas; contudo, difere na combinação dos folíolos glabros, ovados a largo-elípticos, ovário glabro e um fruto relativamente pequeno e cilíndrico. Esta nova espécie é bem representada nos herbários do nordeste do Brasil. Uma chave de identificação é fornecida para distinguir a presente espécie das demais que ocorrem na região da Caatinga.

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Acknowledgements

We thank the curators and staff of the cited herbaria for allowing us to access their collections. This work is part of the Ph.D. thesis of R. B. Pinto and was supported by the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) through a scholarship. The authors are also grateful for the financial support of Edital REFLORA (CNPq proc. 563550/2010-4, FAPESP proc. 2010/52488-9), CNPq (process 312766/2009-2) and FAPERJ (E-26/111.581/2014). We thank Elisa Cândido, Fábio Pupo and Tiago Souto for valuable comments on the manuscript. The authors thank Timothy Utteridge (Editor in Chief), Tania Moura and an anonymous reviewer for their contributions during the review process.

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Correspondence to Rafael Barbosa Pinto.

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Pinto, R.B., de Freitas Mansano, V., Torke, B.M. et al. On the “Cangaço” route: a new species of Hymenaea (Leguminosae) from the Brazilian Caatinga. Kew Bull 72, 42 (2017). https://doi.org/10.1007/s12225-017-9713-6

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  • DOI: https://doi.org/10.1007/s12225-017-9713-6

Key Words

  • Brazilian semi-arid
  • Detarieae
  • Fabaceae
  • Jatobá
  • taxonomy