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The Asteraceae flora of the Serra do Ibitipoca: analyses of its diversity and distribution compared with selected areas in Brazilian mountain ranges

2010; Taylor & Francis; Volume: 8; Issue: 4 Linguagem: Inglês

10.1080/14772000.2010.517573

1478-0933

Rafael Augusto Xavier Borges, Mariana Machado Saavedra, Jimi Naoki Nakajima, Rafaela Campostrini Forzza,

Sesquiterpenes and Asteraceae Studies

Abstract A checklist for the Asteraceae of the Parque Estadual do Ibitipoca is presented, with an analysis of the family's geographic distribution in 10 Brazilian montane rocky fields (campos rupestres and campos de altitude). A total of 111 species belonging to 50 genera, placed in 12 tribes was found. The Eupatorieae, the Vernonieae, the Astereae, Baccharis, Mikania and Lessingianthus were the most diverse tribes and genera, respectively. The Ibitipoca Asteraceae flora was most similar to those of Itacolomi (Minas Gerais State) and Itatiaia (Rio de Janeiro State). Cluster and ordination analyses indicated that the dominant vegetation and geoclimate were important in determining the local composition, but the relationships according to the similarity values among areas were shown only in the ordination analyses. In addition to local factors, historical biogeographic elements are essential to understand the distribution of Asteraceae in these areas. Key words: altitudebiogeography campo rupestre Compositaevegetation Acknowledgements We thank the Instituto Estadual de Florestas de Minas Gerais for field support. To the curators of the herbaria consulted; to the researchers Claudio Nicoletti de Fraga (Jardim Botânico do Rio de Janeiro) for the preparation of the map; to Roberto Esteves (Universidade Estadual do Rio de Janeiro) and Pedro Fiaschi (Universidade de São Paulo) for their comments and suggestions on the manuscript; to D.J. Nicholas Hind (Royal Botanic Gardens, Kew) for his support in identifying collections from the Parque Estadual do Ibitipoca; and to Daniela Zappi and the other reviewer of the manuscript for the valuable contributions. The study was supported by grants from the Conselho Nacional de Desenvolvimento Científico e Tecnológico to Rafaela Forzza, and from CAPES to Mariana Machado Saavedra.