Introdução geral Referências 1. Coerência, correspondência e o renascimento da morfologia na sistemática filogenética 5.8. Lista de espécies

Using Lauraceae as a study case, we aimed in this article to: (i) delimit areas of endemism in the Espinhaço Range, Brazil; (ii) compare these areas of endemism with those previously delimited, as well as with the centres of endemism; (iii) evaluate the association between areas of endemism and vegetation types; and (iv) classify the areas of endemism according to the International Code of Area Nomenclature (ICAN). Based on a recent survey of 99 species from the Espinhaço Range, our dataset consisted of 34 endemic species belonging to nine genera. Following previous studies, we performed parsimony analysis of endemicity (PAE) using a grid square size of 0.5° × 0.5°. We delimited four areas of endemism of Lauraceae: (i) Antônio dos Santos, (ii) Conceição do Mato Dentro, (iii) Itambé do Mato Dentro, and (iv) Rio de Contas; and confirmed six previously delimited areas of endemism: (i) Southern MG, (ii) Southern Mountains Complex, (iii) Conceição do Mato Dentro, (iv) Diamantina Plateau, (v) Serra do Cabral, and (vi) Chapada Diamantina. The areas of endemism Conceição do Mato Dentro, Serra do Cabral, Diamantina, and Serra do Cipó were classified as subdistricts in the Diamantina Plateau district of the Southern Espinhaço province. We summarized and mapped all areas of endemism corresponding to the provinces, districts, and subdistricts that cover the Espinhaço Range. Areas of endemism and centres of endemism are contrasted. Finally, we highlight that the biogeographic studies along this mountain range should embrace higher taxa with representative species in different types of vegetation in order to enrich the majority of the endemism studies mainly concentrated on the campo rupestre. Unusual distribution patterns, diversity of vegetation types, and the presence of restricted species and monophyletic groups open up opportunities to carry out integrative studies concerning the biogeographic regionalization of the ER at multiple spatio‐temporal scales.

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The present study is an account of the species of Orchidaceae occurring in the Mata do Baú, localized in the municipality of Barroso, in the Campo das Vertentes in Minas Gerais. The predominant vegetational formation in the area studied is a seazonal semidecidous forest, which is associated to areas of riverine forest and of campo-cerrado. The family Orchidaceae is represented in the area by 25 genera and 44 species. The genera with higher diversity are Epidendrum and Oncidium (5 spp.), Campylocentrum (4 spp.), and Encyclia, Habenaria and Pleurothallis (with three species each one). Keys, descriptions, illustrations, geographical distribuition and taxonomic comments to each species are provided. Key words: Orchidaceae, Cerrado, “Campo das Vertentes”, Taxonomy, Minas Gerais, Seazonal Semidecidous Forest.

A new species, Mezilaurus conceicionensis (Lauraceae), from Southeastern Brazil, was discovered during fieldwork at Serra da Ferrugem, State of Minas Gerais. This new species is described and illustrated in this study, being distinguished from the remaining species of Mezilaurus species mostly by its globoid fruits. An identification key of the species of Mezilaurus from Southeastern Brazil is presented.