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Hidden in the rocks: A new species of Evolvulus L. (Convolvulaceae) revealed by anatomy

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Abstract

An anatomical analysis of Evolvulus glomeratus (Convolvulaceae) specimens revealed a new species endemic to a rock outcrop in Pernambuco State, which is described and illustrated herein. Evolvulus saxatilis differs from Evolvulus glomeratus based on morphological and anatomical characters, including corolla and ovary shape, presence of epidermal vesicles in the anthers, boundaries of the anticlinal walls of the seed epidermal cells, sculpture of the periclinal walls, arrangement of xylem vessel elements, presence of pericycle lignification, mesophyll type, and presence of crystalliferous idioblast. A complete description, diagnosis, illustration, distribution map, and taxonomic comments are provided.

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Acknowledgments

We thank the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) for a scholarship granted to the first author; the Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq/PVE 314725/2014-8) for funding the project “Convolvulaceae from South America: growing onward global knowledge”; the curators of the herbaria visited; Regina Carvalho for preparing the illustrations; two anonymous reviewers for their helpful comments; Hannah Doerrier for reviewing the English writing in the manuscript; and Juliana Alencar for preparing the distribution map.

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Authors and Affiliations

  1. Programa de Pós-Graduação em Biologia Vegetal, Laboratório de Sistemática Integrativa – LASI, Universidade Federal Rural de Pernambuco, R. Dom Manoel de Medeiros s/n, Dois Irmãos, 52171–900, Recife, Pernambuco, Brazil

    Diego Santos & Maria Teresa Buril

  2. Departamento de Botânica, Laboratório de Anatomia Vegetal, Universidade Federal de Pernambuco, Av. Prof. Moraes Rego, 1235, Cidade Universitária, 50670–901, Recife, Pernambuco, Brazil

    Emília Cristina Pereira de Arruda

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  1. Diego Santos
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  2. Emília Cristina Pereira de Arruda
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  3. Maria Teresa Buril
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Correspondence to Diego Santos.

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Santos, D., de Arruda, E.C.P. & Buril, M.T. Hidden in the rocks: A new species of Evolvulus L. (Convolvulaceae) revealed by anatomy. Brittonia 72, 282–289 (2020). https://doi.org/10.1007/s12228-020-09615-y

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