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Two new remarkable species of Myrcia sect. Aguava (Myrtaceae, Myrteae) from the Brazilian Atlantic and Amazon forests

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Abstract

Myrcia capixaba and M. forzzae, two new species from the large Neotropical genus Myrcia, are here proposed, described, and illustrated. Both species belong to Myrcia sect. Aguava and are morphologically quite distinct from the other species of the section. Myrcia capixaba occurs in the Atlantic Forest of Espírito Santo and presents a set of features that do not overlap with any other species within M. sect. Aguava: dibrachiate trichomes on the branches, leaves, and inflorescences and externally on the flowers, broadly elliptic to ovate leaves with flat, barely visible secondary venation adaxially, and subterminal panicles. Myrcia forzzae occurs in the Amazon Forest of Mato Grosso and resembles M. gigas, differing in the shorter internodes, vegetative branches and inflorescence rachises densely covered with trichomes (vs. with scattered trichomes or glabrous), and calyx lobes bearing trichomes externally (vs. glabrous).

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Acknowledgments

Thanks are due to Rafaela J. Trad for providing field images of Myrcia capixaba; to Marcos Sobral for taxonomic discussions; to Rafaela C. Forzza and the Reflora staff for providing high resolution images of herbarium specimens; also to the curators of the herbaria cited for facilitating access to the collections. The collection of Myrcia forzzae was made thanks to the ‘Programa Monitoramento da Biodiversidade’ from ICMBio (Brazil). This manuscript is part of DFL’s Ph.D. thesis, which was developed with fellowships from CNPq (Brazil; #65669/2013-6 and #205237/2014-2). DFL currently has a post-doc fellowship from CAPES (Brazil; #88887.371829/2019-00). RG has a Research Productivity grant from CNPq (#310912/2021-0). This work was financed in part by CAPES – Finance Code 001.

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  1. Duane F. Lima

    Present address: Programa de Pós-Graduação em Biologia de Fungos, Algas e Plantas, Universidade Federal de Santa Catarina, Florianópolis, SC, 88040-900, Brazil

Authors and Affiliations

  1. Programa de Pós-Graduação em Biologia Vegetal, Universidade Estadual de Campinas, Campinas, São Paulo, 13083-970, Brazil

    Duane F. Lima

  2. Departamento de Botânica, Universidade Federal do Paraná, Curitiba, Paraná, 81531-970, Brazil

    Renato Goldenberg

  3. Herbarium, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK

    Eve J. Lucas

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  1. Duane F. Lima
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Correspondence to Duane F. Lima.

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Lima, D.F., Goldenberg, R. & Lucas, E.J. Two new remarkable species of Myrcia sect. Aguava (Myrtaceae, Myrteae) from the Brazilian Atlantic and Amazon forests. Brittonia 75, 202–209 (2023). https://doi.org/10.1007/s12228-023-09743-1

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