In this study we present a phylogenetic analysis of Melastomeae, focusing on the Neotropical members tribe, group c. 70 species in 30 genera. total, 236 species, including outgroups (Miconieae and Merianieae) representatives Microlicieae Rhexieae, were sequenced for nuclear ribosomal internal transcribed spacer (nrITS), plastid spacers accD-psaI psbK-psbL. Melastomeae are not resolved as monophyletic because mostly herbs small trees with tetramerous flowers (Acanthella, Aciotis, Acisanthera,...

Premise of research. Phylogenetic analyses have shown that tribe Melastomateae is biphyletic, consisting two nonsister clades, the core and Marcetia alliance, both supported by molecular morphological characters.Methodology. In this study, we describe new Marcetieae revise its generic limits based on a phylogeny reevaluation characters. A short description; notes distribution, habitat, taxonomy; list species plus an identification key are presented for all accepted genera.Pivotal results. We...

Abstract Tibouchina (Melastomataceae: Melastomateae) is an exclusively Neotropical genus that currently includes close to 310 species. These were first described or assigned 16 other genera, a reflection of the complex taxonomic and phylogenetic history genus. Previous analyses have shown polyphyletic. Here we present expanded analysis representatives 28 genera New World Melastomateae, as well Old Melastomateae members Marcetieae Microlicieae. Over 300 species sequenced for nrITS plastid...

The Marcetia alliance of Melastomataceae is an exclusively Neotropical group that includes at least 12 genera mostly herbs and subshrubs, occurring in the cerrado central Brazil savannas Amazon region Guayana highlands. This study aimed to test monophyly alliance, evaluate their phylogenetic relationships generic boundaries, investigate morphological characters as potential synapomorphies for delimiting clades or genera. We used nuclear (ITS, ETS) plastid (accD-psaI, atpH-atpF, trnS-trnG)...

Poteranthera (Melastomataceae) is a genus of small, annual herbs with narrow leaves, that inhabit humid savannas in South America and are visible only when bloom. Due to their size paucity collections, the phylogenetic position has been uncertain this point. at times associated, confused, or placed Acisanthera and/or Siphanthera. Phylogenetic analyses based on DNA sequence data place unequivocally within Microlicieae not closely related Siphantera. These results consistent seed anther...

Pleroma marinana and P. penduliflora, two new species of (Melastomataceae) from the dry seasonal Atlantic forest Espírito Santo, Brazil, are described illustrated, with their affinities diagnostic characters discussed. is similar to Tibouchina radula T. oreophila while penduliflora heteromalla, bahiensis formosa. According criteria IUCN Red List, must be included in vulnerable endangered category.

Resumo As espécies de Tibouchina são herbáceas, arbustivas ou arbóreas, freqüentes nas áreas abertas em regeneração, diversas formações vegetacionais do estado Paraná. O gênero pode ser reconhecido pelas flores diplostêmones, com estames dispostos dois ciclos desiguais, apêndices conectivo ventrais, bilobados, ovário súpero revestido por tricomas no ápice, e frutos capsulares semente cocleadas, superfície tuberculada. No Paraná, o está representado 30 espécies, das quais 26 nativas,...

During the preparation of taxonomic review Comolia, some novelties were found. Here we describe Comolia paraensis, a new species endemic to Brazilian state Pará, preliminary categorized as Endangered. This occurs in campinas around Oriximiná and stony Amazonian savannas Monte Alegre Óbidos. paraensis is morphologically similar C. kuhlmannii veronicifolia, two entities that here considered distinct from villosa. illustrated, compared with species, notes on its geographic distribution...

RESUMO - (Tibouchina sect. Pleroma (D. Don) Cogn. (Melastomataceae) no estado de São Paulo). Tibouchina Aubl. (Melastomeae), com ca. 308 espécies, ocupa posição central entre as Melastomataceae neotropicais fruto capsular. Muitas destas espécies estão especialmente concentradas nas regiões sudeste e centro-oeste do Brasil. O gênero encontra-se dividido em 11 seções. Este trabalho teve como objetivo estudar espécie Paulo. relacionadas seguintes espécies: T. chamissoana Cogn., clavata (Pers.)...

Abstract Tibouchina caatingae, a new species of Melastomataceae (Melastomeae), is herein described and illustrated. This has been collected only in areas covered by caatinga vegetation Bahia State, Brazil, one the few family registered for this type vegetation. Due to habit, organization leaves on branches, color petals, it morphologically similar T. noblickii lithophila. These are also endemic Bahia, from genus that occur same type. However, these last two have much smaller leaves,...

Melastomataceae é a família que apresenta maior diversidade de tricomas. Dr. Wurdack em seu "Atlas of hairs" reconheceu 46 tipos tricomas para as neotropicais com o uso MEV, e referiu 17 destes gênero Tibouchina. Em morfologia dos tem sido extensivamente usada na delimitação táxons, assim como estudos antecederam ao trabalho Cogniaux, monografia das brasileiras publicada 1885. Tibouchina sect. Pleroma foi substancial circunscrição várias espécies. O da MEV permitiu uma caracterização 15...

The synonymization of Itatiaia and Purpurella pro parte under Pleroma based on morphological geographical data molecular evidence is made the new combination cleistoflora with its synonyms provided. For one isotypes from HBG designed as lectotype. Illustrations, descriptions commentaries geographic distribution, conservation features are given.

Abstract Pleroma michelangelii, a new species of Melastomeae (Melastomataceae) from Brazil is described and illustrated, compared to its putative closest relatives. In addition this species, Tibouchina trinervia, which was previously not validly published by Glaziou, now correctly presented under Pleroma. trinervia occurs in the Espinhaco range Minas Gerais state, michelangelii Chapada Diamantina, Bahia.

Abstract— During a botanical expedition carried out by the Centro Nacional de Conservação da Flora to northern Minas Gerais, Brazil, first records of Melastomataceae were catalogued for Morro das Marombas, in Serra Montevidéu, situated on Espinhaço Septentrional. These and an identification key melastomes from Marombas are presented. Among these records, collection Marcetia viscida is documented two new microendemic species Pleroma found described illustrated here. congestifolium resembles...

Neste trabalho são apresentados ajustes taxonômicos resultantes de um estudo sobre o gênero Tibouchina Aubl. no Estado do Paraná. É descrita uma nova espécie, saxicola F.S. Meyer, P.J.F. Guim. & R. Goldenb., da seção Pseudopterolepis Cogn., que aparentemente é endêmica Parque Estadual Cerrado, município Jaguariaíva. São também sinonimizadas duas espécies: catharinensis Brade sob T. dusenii e marumbiensis Wurdack hatschbachii Wurdack.

The new species Tibouchina melanocalyx R. Romero, P. J. F. Guimarães & Leoni (Melastomataceae) presents a glabrous hypanthium and calyx lobes, is black in dried material, has filaments style, an ovary with furrowed apex five oblong appendages. These characteristics of the are unique within genus Aublet. This occurs highland, campos de altitude vegetation from National Park Caparaó State Serra do Brigadeiro, Minas Gerais, Brazil.

Melastomataceae é representada no Brasil por 67 gêneros e 1.321 espécies, sendo encontrada em todos os Estados brasileiros. No Estado do Rio de Janeiro são registrados 28 338 espécies. Neste estudo foram tratadas as 26 espécies da família encontradas na Floresta Ombrófila Densa Parque Estadual Pedra Branca, localizado município Janeiro, RJ. Miconia o gênero mais representativo com oito (M. brasiliensis, M. calvescens, cinnamomifolia, latecrenata, mirabilis, prasina, staminea tristis),...

Abstract The origin of the high biodiversity in Neotropics remains an unresolved but critical question, especially for species-rich understudied savannas Brazil, such as campos rupestres and Cerrado. To address this knowledge gap, we leveraged Tibouchina s.s., a clade flowering plants Melastomataceae found Cerrado rupestres, to uncover processes that generated hyper-diverse flora Neotropical savannas. We used phylogenomic approach combined with ecological niche modelling biogeographic...

Abstract— Fritzschia atropurpurea , an endemic new species from the Serra do Cipó, Espinhaço Range, Minas Gerais state, Brazil, is described and illustrated. This can be easily differentiated its congeners by combination of following characters: hirsute-glandular trichomes covering branches, petioles, leaves, bracteoles, pedicels, hypanthium, sepals, medial-apical portion right margin petals; membranaceous leaves with a dark purple abaxial surface; long pedicels. Images scanning electron...

A taxonomic treatment of Tibouchina s.l. from Bahia, Brazil, is presented. Thirty-seven species are recognized, one them in Pleroma (P. michelangelii). Four new records for Northeast Brazil (T. crassiramis, T. elegans, granulosa and sebastianopolitana), 25 endemic to the state nine restricted Chapada Diamantina. The includes an identification key, descriptions, illustrations, comments, distribution maps state.

Fritzschia Cham. is mainly distributed in the Brazilian Cerrado and, until now, was known from Federal District and states of Minas Gerais, Goiás, Mato Grosso do Sul. We present first record genus state Bahia, reporting sessilis (DC.) M.J.R.Rocha & P.J.F.Guim., a taxon previously considered endemic to Gerais state.

Tibouchina bruniana P. J. F. Guim. and T. araguaiensis Guim., two new species from Goiás Tocantins, respectively, in central Brazil, are described, illustrated, compared to their putative closest relatives. Both belong sect. Barbigerae Naudin, which is characterized by long, simple trichomes on the anthers, positioned over union between staminal filament connective. can be distinguished its solitary flowers, less often dichasia, diagnostic characters of presents as ciliate overlapping...

É apresentado o tratamento taxonômico para os gêneros Aciotis, Acisanthera, Marcetia e Pterolepis. (Melastomeae, Melastomataceae) no estado do Rio de Janeiro. Cada um dos quatro apresentados está representado por uma única espécie estado: Aciotis paludosa, Acisanthera variabilis, taxifolia Pterolepis glomerata. Com este estudo se atualizou a lista espécies flora Janeiro, removendo seis equivocadamente listadas. Um à parte sendo providenciado as Tibouchina sensu lato, que serão segregadas...