No part of this publication may be reproduced, stored, transmitted or disseminated, in any form, or by any means, without prior written permission from the publisher, to whom all requests to reproduce copyright material should be directed in writing.This authorization does not extend to any other kind of copying, by any means, in any form, and for any purpose other than private research use. (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.

The shortage of reliable primary taxonomic data limits the description of biological taxa and the understanding of biodiversity patterns and processes, complicating biogeographical, ecological, and evolutionary studies. This deficit creates a significant taxonomic impediment to biodiversity research and conservation planning. The taxonomic impediment and the biodiversity crisis are widely recognized, highlighting the urgent need for reliable taxonomic data. Over the past decade, numerous countries worldwide have devoted considerable effort to Target 1 of the Global Strategy for Plant Conservation (GSPC), which called for the preparation of a working list of all known plant species by 2010 and an online world Flora by 2020. Brazil is a megadiverse country, home to more of the world's known plant species than any other country. Despite that, Flora Brasiliensis, concluded in 1906, was the last comprehensive treatment of the Brazilian flora. The lack of accurate estimates of the number of species of algae, fungi, and plants occurring in Brazil contributes to the prevailing taxonomic impediment and delays progress towards the GSPC targets. Over the past 12 years, a legion of taxonomists motivated to meet Target 1 of the GSPC, worked together to gather and integrate knowledge on the algal, plant, and fungal diversity of Brazil. Overall, a team of about 980 taxonomists joined efforts in a highly collaborative project that used cybertaxonomy to prepare an updated Flora of Brazil, showing the power of scientific collaboration to reach ambitious goals. This paper presents an overview of the Brazilian Flora 2020 and provides taxonomic and spatial updates on the algae, fungi, and plants found in one of the world's most biodiverse countries. We further identify collection gaps and summarize future goals that extend beyond 2020. Our results show that Brazil is home to 46,975 native species of algae, fungi, and plants, of which 19,669 are endemic to the country. The data compiled to date suggests that the Atlantic Rainforest might be the most diverse Brazilian domain for all plant groups except gymnosperms, which are most diverse in the Amazon. However, scientific knowledge of Brazilian diversity is still unequally distributed, with the Atlantic Rainforest and the Cerrado being the most intensively sampled and studied biomes in the country. In times of “scientific reductionism”, with botanical and mycological sciences suffering pervasive depreciation in recent decades, the first online Flora of Brazil 2020 significantly enhanced the quality and quantity of taxonomic data available for algae, fungi, and plants from Brazil. This project also made all the information freely available online, providing a firm foundation for future research and for the management, conservation, and sustainable use of the Brazilian funga and flora.

No abstract

We present a taxonomic study on the Melastomataceae in the "Parque Estadual do Forno Grande", Espírito Santo state. There are 39 species distributed in nine genera: Leandra (12), Miconia (12), Tibouchina (9), Bertolonia, Lavoisiera, Marcetia, Meriania, Microlepis and Pleiochiton (1 species each). Four species represent new records for the state: Bertolonia mosenii Cogn., Leandra aurea (Cham.) Cogn., L. tomentosa Cogn. and Tibouchina semidecandra Cogn. Three species are threatened, according to the "Lista do Espírito Santo": Meriania tetramera Wurdack, Miconia octopetala Cogn. and Tibouchina castellensis Brade, a local endemic. We also present identification key, descriptions, illustrations and information on geographic distribution of the species.

Agradeço formalmente as agências que concederam as bolsas de estudos sem as quais seria impossível o desenvolvimento deste trabalho ao longo dos últimos 4 anos e meio: CAPES (PNADB e PDSE), CNPQ (programa REFLORA) e NSF (EUA) no âmbito do projeto PBI Miconieae por financiar o trabalho em campo e herbários na Amazônia e também a parte molecular apresentada no Capítulo I. Foram tantas as pessoas que me acompanharam nessa jornada ou que felizmente cruzaram o meu caminho ao decorrer dela, que não posso chegar ao destino sem agradecê-las... O meu maior agradecimento vai ao meu orientador sempre presente Dr. Renato Goldenberg que desde o mestrado confiou em meu trabalho e compartilhou muito conhecimento sobre taxonomia, Melastomataceae e às vezes, até mesmo vida. Sem o seu trabalho, seu profissionalismo e a sua paciência esta tese jamais seria possível. Agradeço pelo tempo que dedicou em me ajudar tanto a crescer como profissional e também como pessoa. Agradeço muito ao meu co-orientador Dr. Fabián Michelangeli por todos os ensinamentos e ajudas no período de estágio sanduíche no Jardim Botânico de Nova Iorque. Todo o seu esforço em reunir e compartilhar bibliografias, angariar recursos e treinar alunos (no quais eu me incluo) tem feito toda a diferença na compreensão da sistemática de Melastomataceae e deixado frutos de inestimável valor. Foi uma honra ter trabalhado com parceiros tão competentes... Obrigada Dra. Mayara Caddah por todo o incentivo desde o mestrado e pelas inúmeras ajudas incluindo a valiosíssima participação na pré banca. Você foi fundamental para o desenvolvimento deste trabalho e até mesmo para que eu sempre acreditasse nele.

No abstract

Graffenrieda glandulosa can be distinguished from other species in the genus by the 3-nerved leaves with barbate nerve bases on the abaxial surface, the calyptrate calyx, and the short connective appendages covered with glandular trichomes. This new species has been collected only in the western tip of the state of Acre, Brazil, near the border with Peru.Resumo-Graffenrieda glandulosa distingue-se das demais especies do género pelas folhas 3-nervadas e com as bases das nervuras barbadas na face abaxial, pelo cálice caliptrado e pelos apéndices do conectivo muito curtos e cobertos por tricomas glandulares. Esta nova especie foi coletada apenas no extreme oeste do estado do Acre, próximo à fronteira com o Peru.

ResumoApresenta-se um tratado taxonômico para a família Melastomataceae nas áreas de cangas da Serra dos Carajás. Foram registradas 42 espécies distribuídas em 18 gêneros, sendo Miconia o mais rico, com 20 espécies, seguido de Clidemia com três espécies. O gênero monotípico Brasilianthus (B. carajensis) é considerado endêmico da região de Carajás, assim como uma espécie de Pleroma. Este trabalho apresenta descrições morfológicas, chaves de identificação para gêneros e espécies, ilustrações, distribuição geográfica e comentários para as espécies tratadas. Palavras-chave: Afloramentos ferruginosos, Amazônia, Brasilianthus, endemismo. AbstractA taxonomic treatment for the Melastomataceae occurring in the cangas of Serra dos Carajás is presented. A total of 42 species in 18 genera were registered, of which Miconia is the richest with 20 species, followed by Clidemia with three species. The monotypic genus Brasilianthus (B. carajensis) is considered endemic to the region of Carajás, as well as one species of Pleroma. This work presents morphological descriptions, identification keys of genera and species, illustrations, geographic distribution and comments for the species treated.