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Eriotheca estevesiae (Malvaceae: Bombacoideae): A new species from the cerrado vegetation of Brazil

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Abstract

A new species, Eriotheca estevesiae, from the Cerrado vegetation of Brazil, is described and illustrated. Phylogenetic analyses based on internal transcriber spacer (ITS) sequence data support the new species as sister to E. pubescens, a widespread species in central Brazil. Both species have stellate trichomes on the leaflets, a character not found in other species of Eriotheca. Eriotheca estevesiae differs from E. pubescens by having oblong to narrowly-elliptic (vs. mostly obovate) leaflets that are chartaceous (vs. coriaceous) and covered with ferruginous (vs. golden) trichomes; pedicels and calyces that lack stellate trichomes; and smaller flowers and capsules. Analysis of scanning electron microscopy (SEM) micrographs of the leaf epidermis revealed that E. estevesiae also differs from E. pubescens by the presence of peltate scales with an irregularly deep-lobed (vs. regular) outline and by stomatal density and mean stomatal length. Notes on distribution, phenology, and conservation status of the new species as well as a discussion of its morphological relationship to other species of Eriotheca from Cerrado are provided.

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Acknowledgments

We thank the curators of the herbaria CEN and IBGE for kindly sending material on loan, the coordinators of the Laboratory of Plant Systematics (LAMOL/UEFS), Carla T. de Lima for the line drawings; Leilton Damascena for his help with the map, the Graduate Program in Botany (PPGBot/UEFS), to Fundação Osvaldo Cruz (FIOCRUZ) for the use of the scanning electron microscope, FAPESB (APP0006/2011) and the Conselho Nacional de Desenvolvimento Científico e Tecnológico–CNPq (300811/2010-1 and 563546/2010-7). JGCS and ACM were supported by doctorate fellowships from Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), respectively. JGCS also thanks CAPES for a sandwich fellowship through the Reflora program (process BEX 5415/13-6).

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  1. Programa de Pós-Graduação em Botânica, Universidade Estadual de Feira de Santana, Av. Transnordestina, s/n, Novo Horizonte, 44036-900, Feira de Santana, BA, Brazil

    Jefferson Guedes de Carvalho-Sobrinho, Aline Costa da Mota & Luciano Paganucci de Queiroz

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  1. Jefferson Guedes de Carvalho-Sobrinho
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  2. Aline Costa da Mota
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  3. Luciano Paganucci de Queiroz
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Correspondence to Jefferson Guedes de Carvalho-Sobrinho.

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de Carvalho-Sobrinho, J.G., da Mota, A.C. & de Queiroz, L.P. Eriotheca estevesiae (Malvaceae: Bombacoideae): A new species from the cerrado vegetation of Brazil. Brittonia 67, 29–36 (2015). https://doi.org/10.1007/s12228-014-9350-4

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  • DOI: https://doi.org/10.1007/s12228-014-9350-4

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