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Plant Systematics and Evolution

, Volume 305, Issue 3, pp 233–246 | Cite as

Molecular, morphological, and anatomical data support a new species of Croton sect. Geiseleria (Crotonoideae, Euphorbiaceae)

  • Rodolfo C. SodréEmail author
  • Alessandro O. de Souza
  • Alexandre A. Alonso
  • Marcos J. da Silva
Original Article
  • 67 Downloads

Abstract

Croton macrosepalus Sodré & M.J.Silva (sp. nov.), a new species found in the states of Bahia, Goiás, and Tocantins, in Brazil, is described and illustrated. Although it is morphologically similar to Croton spica, the novel species can be differentiated from it by having large glandular stipules, entire or sometimes serrulate leaf margins, petioles with 2–8 cylindrical nectary glands at the apex, ovate pistillate sepals, and a hat-shaped caruncle. The habitat, conservation status, phenology, and morphological relationships of the species are also discussed. Morphological data and molecular analyses using ITS and trnL–trnF support the placement of C. macrosepalus and C. spica in Croton sect. Geiseleria. A geographic distribution map, images, notes about the leaf anatomy of both species, and their phylogenetic relationships are provided.

Keywords

Cerrado Croton Endemism Phylogeny 

Notes

Acknowledgements

The first and second authors thank Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for the Master’s and Doctoral grants, respectively. The fourth author thanks Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for the grant on productivity (Process No. 307371/2013–1). All the authors thank Renato Galhardo Neto for the illustrations and Laboratório Multiusuário de Microscopia de Alta Resolução, of the Universidade Federal de Goiás, for the use of their equipment.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

606_2019_1566_MOESM1_ESM.pdf (665 kb)
Supplementary material 1 (PDF 664 kb)
606_2019_1566_MOESM2_ESM.nex (73 kb)
Supplementary material 2 (NEX 73 kb)

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Copyright information

© Springer-Verlag GmbH Austria, part of Springer Nature 2019

Authors and Affiliations

  • Rodolfo C. Sodré
    • 1
    Email author
  • Alessandro O. de Souza
    • 2
  • Alexandre A. Alonso
    • 3
  • Marcos J. da Silva
    • 4
  1. 1.Programa de Pós-graduação em Ciências Biológicas - Botânica, Departamento de Botânica, Instituto de BiociênciasUniversidade Estadual Paulista “Júlio de Mesquita Filho”BotucatuBrazil
  2. 2.Programa de Pós-graduação em Botânica, Departamento de Botânica, Campus Darcy RibeiroUniversidade de BrasíliaBrasíliaBrazil
  3. 3.Laboratório de Anatomia Vegetal, Departamento de Botânica, Instituto de Ciências BiológicasUniversidade Federal de GoiásGoiâniaBrazil
  4. 4.Laboratório de Morfologia e Taxonomia Vegetal, Departamento de Botânica, Instituto de Ciências BiológicasUniversidade Federal de GoiásGoiâniaBrazil

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