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      A tribo Dalbergieae (Leguminosae - Papilionoideae) em um trecho de Floresta Estacional Semidecidual das Terras Baixas, João Pessoa, Estado da Paraíba, Brasil Translated title: The Dalbergieae tribe (Leguminosae-Papilionoideae) in a Lowland Seasonal Semideciduous Forest stretch, João Pessoa, Paraíba State, Brazil

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          Abstract

          RESUMO Este trabalho apresenta um estudo taxonômico das espécies de Leguminosae - Dalbergieae para a Mata do Buraquinho, João Pessoa, Paraíba, uma área mista contendo elementos de Mata Atlântica, da flora amazônica e da Hileia Baiana. O trabalho tem por base coletas de campo e a análise morfológica de materiais depositados em herbários. Foram encontradas 11 espécies nativas distribuídas em sete gêneros: Aeschynomene evenia, A. viscidula, Andira legalis, A. nitida, Arachis pintoi, Machaerium hirtum, Pterocarpus rohrii, Stylosanthes capitata, S. guianensis, S. viscosa e Zornia latifolia. Desse total de espécies, seis com hábito subarbustivo, quatro com hábito arbóreo e uma herbácea. A ocorrência de Aeschynomene evenia, Andira legalis, Arachis pintoi e Stylosanthes gracilis é registrada pela primeira vez para o Estado da Paraíba. São apresentados chave de identificação, descrições, comentários sobre a morfologia e ilustrações para as espécies.

          Translated abstract

          ABSTRACT This work presents a taxonomic study of species of Leguminosae - Dalbergieae from Mata do Buraquinho, João Pessoa, Paraíba State, which is a mixed area composed by elements of Rain Forest, the Amazonian flora, and the Bahian Hileia. The study was based on field collections and morphological analysis of herbarium specimens. As a result, 11 native species distributed into seven genera were found: Aeschynomene evenia, A. viscidula, Andira legalis, A. nitida, Arachis pintoi, Machaerium hirtum, Pterocarpus rohrii, Stylosanthes capitata, S. guianensis, S. viscosa, and Zornia latifolia. Of these species, six are bushes, four are trees, and one is an herb. The occurrence of Aeschynomene evenia, Andira legalis, Arachis pintoi, and Stylosanthes gracilis is recorded for the first time in the state of Paraíba. Identification key, descriptions, comments on the morphology and illustrations for the species are presented.

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          Legume phylogeny and classification in the 21st century: Progress, prospects and lessons for other species-rich clades

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            Reconstructing the deep-branching relationships of the papilionoid legumes

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              The dalbergioid legumes (Fabaceae): delimitation of a pantropical monophyletic clade.

              A monophyletic pantropical group of papilionoid legumes, here referred to as the "dalbergioid" legumes, is circumscribed to include all genera previously referred to the tribes Aeschynomeneae and Adesmieae, the subtribe Bryinae of the Desmodieae, and tribe Dalbergieae except Andira, Hymenolobium, Vatairea, and Vataireopsis. This previously undetected group was discovered with phylogenetic analysis of DNA sequences from the chloroplast trnK (including matK) and trnL introns, and the nuclear ribosomal 5.8S and flanking internal transcribed spacers 1 and 2. All dalbergioids belong to one of three well-supported subclades, the Adesmia, Dalbergia, and Pterocarpus clades. The dalbergioid clade and its three main subclades are cryptic in the sense that they are genetically distinct but poorly, if at all, distinguished by nonmolecular data. Traditionally important taxonomic characters, such as arborescent habit, free stamens, and lomented pods, do not provide support for the major clades identified by the molecular analysis. Short shoots, glandular-based trichomes, bilabiate calyces, and aeschynomenoid root nodules, in contrast, are better indicators of relationship at this hierarchical level. The discovery of the dalbergioid clade prompted a re-analysis of root nodule structure and the subsequent finding that the aeschynomenoid root nodule is synapomorphic for the dalbergioids.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                hoehnea
                Hoehnea
                Hoehnea
                Instituto de Botânica (São Paulo, SP, Brazil )
                0073-2877
                2236-8906
                2019
                : 46
                : 2
                : e622018
                Affiliations
                [2] Areia Paraíba orgnameUniversidade Federal da Paraíba Brazil
                [4] Cuiabá Mato Grosso orgnameUniversidade Federal de Mato Grosso orgdiv1Instituto de Biociências orgdiv2Departamento de Botânica e Ecologia Brazil
                [3] Botucatu orgnameUniversidade Estadual Paulista orgdiv1Programa de Pós-Graduação em Ciências Biológicas (Botânica) orgdiv2Instituto de Biociências Brazil
                [1] João Pessoa orgnameUniversidade Federal da Paraíba orgdiv1Departamento de Sistemática e Ecologia Brazil
                Article
                S2236-89062019000200206
                10.1590/2236-8906-62/2018
                674a3215-c7ea-4206-9f50-51919395e3d3

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 14 May 2019
                : 29 June 2018
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 36, Pages: 0
                Product

                SciELO Brazil

                Categories
                Artigos

                diversidade florística,Fabaceae,taxonomia vegetal,Atlantic Rainforest,floristic diversity,plant taxonomy

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