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      Diversidade taxonômica e distribuição geográfica das Orchidaceae brasileiras Translated title: Taxonomic diversity and geographic distribution of the Brazilian Orchidaceae

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          Abstract

          Orchidaceae é uma das maiores famílias do Reino Vegetal, e sua distribuição geográfica obedece a limites definidos já a nivel de sub-famílias. O genero Laelia, com 7 seções das quais 5 ocorrentes no Brasil, apresenta características evolutivas interessantes, principalmente a sect. Parviflorae, que ocorre predominantemente em Minas Gerais e que representa um exemplo de "evolução explosiva" ainda em andamento. Os tratamentos taxonómicos dados a cada diferente grupo dentro da família não se apresentam uniformes, o que leva à aceitação de um grande número de gêneros pequenos em alguns grupos e de poucos gêneros grandes e complexos, em outros grupos.

          Translated abstract

          Orchidaceae is one of the largest plant families, and each of its subfamilies have a delimited distribution. The genus Laelia, with 7 subsections, 5 of which occuring in Brazil, shows interestingly evolutionary characteristics. Laelia sect. Parviflorae, which occurs mainly in Minas Gerais (Brazil) is an example of "explosive evolution" still in process. The taxonomic treatment of the orchid family is not uniform from taxa to taxa which leads to many small genera in some groups and few large genera in some other groups.

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          Most cited references31

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          The orchids: natural history and classification

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            Flowering plants, origin and dispersal

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              Icones Pleurothallidinarum III: Systematics of Pleurothallis.

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                Author and article information

                Contributors
                Role: ND
                Journal
                abb
                Acta Botanica Brasilica
                Acta Bot. Bras.
                Sociedade Botânica do Brasil (Belo Horizonte )
                1677-941X
                July 1990
                : 4
                : 1
                : 177-187
                Affiliations
                [1 ] Instituto de Botânica Brazil
                Article
                S0102-33061990000100013
                10.1590/S0102-33061990000100013
                c7607822-1cb1-474f-97ab-cda11c97954e

                http://creativecommons.org/licenses/by/4.0/

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                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0102-3306&lng=en
                Categories
                PLANT SCIENCES

                Plant science & Botany
                Orchidaceae,systematics,Orchid distribution,evolução,evolution,distribuição das orquídeas,sistemática

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