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      Acanthaceae from Cuiabá lowlands, Mato Grosso, Brazil: a vegetational mosaic extending from Chapada dos Guimarães to Pantanal

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          Abstract

          Abstract This study presents a taxonomic survey of the species of Acanthaceae in the Cuiabá lowlands, an area encompassing several habitats, from rock outcrops in Chapada dos Guiamarães to the periodically flooded forest areas in the Pantanal. Herbarium collections were analyzed and 13 field expeditions were carried out to visit different phytophysiognomies and ecosystems. The family is represented by 31 species and 12 genera, the most diverse being Justicia (10 species) and Ruellia (eight species). Additionally, Dicliptera squarrosa, Dyschoriste schottiana, Ruellia blechum, R. jussieuoides, and R. trachyphylla are newly recorded in the state of Mato Grosso. The number of species is higher if compared with other taxonomic studies of Acanthaceae in Central-Western Brazil. Despite the area being overlooked by the botanical community, we expect our results will instigate further taxonomic studies in the area. This study provides an identification key, short descriptions, comments on taxonomy and distribution, and photographs.

          Translated abstract

          Resumo O presente estudo apresenta um levantamento taxonômico das espécies de Acanthaceae na Baixada Cuiabana, uma área que inclui uma grande variação de habitats, desde afloramentos rochosos da Chapada dos Guimarães até florestas periodicamente inundadas do Pantanal. Coleções de herbários e 13 expedições de campo foram realizadas procurando visitar diferentes fitofisionomias e ecossistemas presentes na área. A família é representada por 31 espécies e 12 gêneros, sendo os mais diversos Justicia (10 espécies) e Ruellia (oito espécies). Entre as espécies Dicliptera squarrosa, Dyschoriste schottiana, Ruellia blechum, R. jussieuoides e R. trachyphylla são novos registros para o estado de Mato Grosso. O número de espécies é maior se comparado com outros estudos taxonômicos desenvolvidos para Acanthaceae no Centro-Oeste do Brasil. Apesar de a área ter sido negligenciada pela comunidade botânica, os nossos resultados instigam novos estudos taxonômicos semelhantes com outras famílias de angiospermas. Esse estudo apresenta uma chave de identificação, descrições curtas, comentários sobre taxonomia e distribuição, e fotografias.

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          An update of the Angiosperm Phylogeny Group classification for the orders and families of flowering plants: APG IV

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              Toward a comprehensive understanding of phylogenetic relationships among lineages of Acanthaceae s.l. (Lamiales).

              Acanthaceae (Asteridae; Lamiales) include ∼4000 species and encompass a range of morphological diversity, habitats, and biogeographic patterns. Although they are important components of tropical and subtropical habitats worldwide, inadequate knowledge of the family's phylogenetic framework has impeded comparative research. In this study, we sampled all known lineages of Acanthaceae including Andrographideae. Also included were eight of 13 genera whose relationships remain enigmatic. We used sequence data from nrITS and four chloroplast noncoding regions, and parsimony and Bayesian methods of analysis. Results strongly support most aspects of relationships including inclusion of Avicennia in Acanthaceae. Excepting Neuracanthus, newly sampled taxa are placed with strong support; Kudoacanthus is in Justicieae, Tetramerium lineage, and the remaining enigmatic genera are in Whitfieldieae or Barlerieae, and Andrographideae are sister to Barlerieae. This last result is unanticipated, but placement of Andrographideae based on structural characters has been elusive. Neuracanthus is monophyletic but placement relative to (Whitfieldieae (Andrographideae + Barlerieae)) is weakly supported. Many clades have clear morphological synapomorphies, but nonmolecular evidence for some remains elusive. Results suggest an Old World origin with multiple dispersal events to the New World. This study informs future work by clarifying sampling strategy and identifying aspects of relationships that require further study.
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                Author and article information

                Journal
                rod
                Rodriguésia
                Rodriguésia
                Instituto de Pesquisas Jardim Botânico do Rio de Janeiro (Rio de Janeiro, RJ, Brazil )
                0370-6583
                2175-7860
                2023
                : 74
                : e00612022
                Affiliations
                [3] Caxias Maranhão orgnameUniversidade Estadual do Maranhão orgdiv1Depto. Química e Biologia orgdiv2Prog. Pós-graduação em Biodiversidade, Ambiente e Saúde Brazil
                [1] Cuiabá orgnameUniversidade Federal do Mato Grosso orgdiv1Depto. Botânica e Ecologia orgdiv2Lab. Estudos Integrados de Plantas Brazil
                [4] Cuiabá Mato Grosso orgnameUniversidade Federal de Mato Grosso orgdiv1Prog. Pós-graduação Biologia Vegetal Brazil
                [2] Coyoacán orgnameUniversidad Nacional Autónoma de México orgdiv1Instituto de Biología orgdiv2Departamento de Botánica Mexico
                Article
                S2175-78602023000100214 S2175-7860(23)07400000214
                10.1590/2175-7860202374013
                80dee087-0235-43c0-a6d7-44ba1462360f

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

                History
                : 02 September 2022
                : 14 May 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 106, Pages: 0
                Product

                SciELO Brazil

                Categories
                Original Papers

                taxonomia,Ruellia,Lamiales,Justicia,flora,Cerrado,taxonomy
                taxonomia, Ruellia, Lamiales, Justicia, flora, Cerrado, taxonomy

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