A New Species of Miconia (Melastomataceae) from the Atlantic Forest of Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)During the preparation of a monographic treatment for a group of Miconia from the Atlantic Forest, Brazil, a new species was detected and is presented here. Miconia ruschiana can be recognized among other species of Miconia sect. Glossocentrum by the terete branches, shortly plinerved leaves abaxially covered by non-lepidote stellate trichomes, panicles with glomerulate ending branches, large flowers with the calyx bearing long, caducous, external lobes, and ovaries that are densely covered by trichomes at the apex. The new species is known from the mountains of the state of Espirito Santo in eastearn Brazil.374974977Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)National Science Foundation [DEB-0818399]Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)National Science Foundation [DEB-0818399

Miconia atlantica, a new species of Melastomataceae from the eastern mountains of Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)A new species of Miconia from the mountains in the Atlantic Forest of eastern Brazil is presented here. Miconia atlantica has been collected in the states of So Paulo and Espirito Santo. It belongs to section Glossocentrum and can be recognized among others species in this section by the leaves with acute bases, an indumentum consisting of stellate trichomes moderately covering the abaxial surface of mature leaves, glomerulate inflorescences, and stamens with unappendaged connectives. Marsupiform domatia were found in So Paulo populations.653351356Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Taxonomic notes on South American Miconia (Melastomataceae). III

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)We propose nine synonyms and five lectotypifications for South American Miconia (Melastomataceae). Miconia acreana is synonymized under M. erioclada; Miconia depauperata and M. doriana under M. paniculata; Miconia inconspicua var. glabrata under M. petropolitana; Miconia japuraensis under M. juruensis; Miconia martiusiana under M. cinnamomifolia; Miconia maximiliana under M. ibaguensis, Miconia pileata under M. ciliata and Miconia pseudonervosa under M. nervosa. We propose lectotypes for M. acreana, M. doriana, M. juruensis, M. longicuspis and M. pileata.9411322Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)NSF [DEB-0818399]Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CNPq [Proc. 302325/2009-3]NSF [DEB-0818399]CAPES [BEX 9095/11-0

A new species of Miconia (Melastomataceae) from Amazonas, Brazil

Miconia manauara has been collected several times in two municipalities in the state of Amazonas, Brazil, and once in nearby Para. It can be recognized among species in Miconia sect. Miconia by the leaves with obtuse to rounded bases, entire margins, cuspidate apices and five basal to shortly suprabasal nerves. The leaves also have glabrous mature adaxial leaf surfaces and the abaxial surface with two indument layers, the first consisting of moderate to dense, ferruginous, sessile stellate trichomes, 0.1-0.2 mm diam., and the second consisting of a dense, granulose-furfuraceous layer. The inflorescences are glomerulate, the 5-merous flowers have a caducous calyx, minutely papillose petals, ten stamens that are ventrally bilobed and with a small dorsal, obtuse tooth, and the ovaries are furfuraceous and usually covered by unbranched trichomes on their apices.632245249NSF [DEB-0818399]NSF [DEB-0818399

Species boundaries inferred from microsatellite markers in the Kielmeyera coriacea complex (Calophyllaceae) and evidence of asymmetric hybridization

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Kielmeyera coriacea is one of the most characteristic entities of the Cerrado, a savanna vegetation of Central Brazil and it is a morphologically highly variable polyploid species. In the revision of the genus, an earlier variety was elevated to a related species. However, this proposal has not been accepted by the scientific community and the problematic taxonomic circumscription of the group raises doubts about various scientific studies on plants identified as K. coriacea. In the present study, we investigated the subject by a population genetics approach using eight microsatellite markers in an attempt to understand better the relationships between the proposed species. Like morphological and anatomical observations, molecular studies of highly polymorphic markers showed a great similarity between K. coriacea and K. grandiflora. However, this tool could effectively screen the boundaries of the species complex and, in addition, detect an introgressive hybridization process.2994731741Faepex/Unicamp-Fundacao de Apoio ao Ensino, a Pesquisa e Extensao da Universidade Estadual de CampinasConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq

Nomenclator botanicus for the neotropical genus Miconia (Melastomataceae: Miconieae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Miconia has 1057 species and is the largest genus of woody flowering plants with a distribution restricted to tropical America. These species occur from Mexico (79 spp) to Argentina (10) and Uruguay (1), and attain highest richness in Colombia (338 spp), Peru (302), Brazil (274), Ecuador (254) and Venezuela (212). More than half of the species belong to only three sections (Miconia with 245, Cremanium with 223, and Amblyarrhena with 212). The other sections are Chaenopleura (86 spp), Glossocentrum (82), Tamonea (71), Octomeris (59), Jucunda (23), Laceraria (19), Chaenanthera (17), Hartigia (7), and Adenodesma (6), while seven species have not been assigned to any section. In this nomenclator we attempt to enumerate all currently accepted species of Miconia with place of publication, information on types, synonymy, sectional placement, and distributional notes organized by country.10611+Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)NSF [DEB-0818399]Global Biodiversity Information FacilityConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)CNPq [Proc. 302325/2009-3]CAPES [BEX 9095/11-0]NSF [DEB-0818399

Microsatellite markers isolated from polyploid Kielmeyera coriacea Mart. & Zucc. (Clusiaceae) from an enriched genomic library

Kielmeyera coriacea is a morphologically highly variable polyploid species, characteristic of the Cerrado, the savanna-like vegetation of the Central-Brazil. It was subject of various biological studies and, like others cerrado plants, this species suffers strong anthropogenic pressure. To access the genetic diversity of populations of this species, its taxonomic circumscriptions and to study supposed hybridization events, we have developed 11 polymorphic microsatellite loci from a CT/GT-enriched genomic library. The band pattern showed 12-32 bands per locus, and 2-8 bands per locus per individual. All microsatellites successfully amplified PCR products in K. grandiflora, the putative sister species, and all revealed similar multibanded pattern.10515331535Coordenacao de Aperfeic, oamento de Pessoal de Nivel SuperiorFundo de Apoio ao Ensino, a Pesquisa e a Extensao da Universidade Estadual de Campinas [108807]Fundo de Apoio ao Ensino, a Pesquisa e a Extensao da Universidade Estadual de Campinas [108807

Data from: Genetic structure and diversity of populations of polyploid Tibouchina pulchra Cogn. (Melastomataceae) under different environmental conditions in extremes of an elevational gradient

The genetic structure and diversity of plants may change significantly in an elevational gradient because different elevations regulate different ecological conditions. Several factors may influence genetic variation, such as mutations, selection, genetic drift, and gene flow. The aim of the present study was to evaluate the genetic structure and diversity of populations of Tibouchina pulchra Cogn. (Melastomataceae) trees in two extremes of an elevational gradient experiencing different environmental conditions. Nine polymorphic microsatellite loci were used to measure the genetic diversity of 14 adult populations, whose structure was evaluated using frequentist and Bayesian analyses. We also carried out progeny structure and paternity analyses comparing the number of fathers of each progeny and the probability of the progeny genotypes to be the result of selfing in order to evaluate the possible current processes leading to such genetic structure. Genetic structure analyses indicated the existence of genetic differentiation between populations in adults and progenies, but with a contact interface between them. The population from the higher region showed smaller genetic diversity when compared to the population at the lower region. However, the pollen variability delivered to the stigmas at the higher region was not different from that of the lower region. These results may be explained by the dynamics of gene flow mediated by pollen, especially by the different amounts of pollination events in each region, as well as local adaptation, distribution, and reproduction characteristics of T. pulchra