Sobre la Posición sistemática de Brunellia Ruiz & Pavon
Under the concept that Brunellia belongs to the Cunoniaceae rather thant being separated in Brunelliaceae, this paper examines the systematic position of Brunellia by studying the phylogentic relationships of this taxon with eleven ingrow taxa representing Cunoniaceae and using twenty characters. A total of twelve taxa represent the ingroup. The Hennig86 program based on parsimony was used to choose the hypotheses about relationships. The data of the internal group was analyzed first with four outgroups: Connarus, Davidsonia, Fothergilla y Quercus, then excluding Quercus and last with each of the outgroups independently. Data were polarized for the last analysis. Results showed that Brunellia does not belong to Cunoniaceae and Cunoniaceae is not a monophyletic group. I propose that Brunellia, and Spiraeanthemun-Acsmithia under a different family from Cunoniaceae. More research is necessary to corroborate the relationships of these taxa. The monophylyot the Cunoniaceae is also doubtful because some of its genera are nested with Davidsonia. The results also confirmed the relationships between the Rosidae and the lower Hamameliidae. Discussion about plesiomorphic and apomorphic states conditions are given for the Rosidae. The monophyly of none of Engler's tribes is confirmed.
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| Format: | Digital revista |
| Language: | spa |
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Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias - Instituto de Ciencias Naturales
1997
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| Online Access: | https://revistas.unal.edu.co/index.php/cal/article/view/17403 |
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| Summary: | Under the concept that Brunellia belongs to the Cunoniaceae rather thant being separated in Brunelliaceae, this paper examines the systematic position of Brunellia by studying the phylogentic relationships of this taxon with eleven ingrow taxa representing Cunoniaceae and using twenty characters. A total of twelve taxa represent the ingroup. The Hennig86 program based on parsimony was used to choose the hypotheses about relationships. The data of the internal group was analyzed first with four outgroups: Connarus, Davidsonia, Fothergilla y Quercus, then excluding Quercus and last with each of the outgroups independently. Data were polarized for the last analysis. Results showed that Brunellia does not belong to Cunoniaceae and Cunoniaceae is not a monophyletic group. I propose that Brunellia, and Spiraeanthemun-Acsmithia under a different family from Cunoniaceae. More research is necessary to corroborate the relationships of these taxa. The monophylyot the Cunoniaceae is also doubtful because some of its genera are nested with Davidsonia. The results also confirmed the relationships between the Rosidae and the lower Hamameliidae. Discussion about plesiomorphic and apomorphic states conditions are given for the Rosidae. The monophyly of none of Engler's tribes is confirmed. |
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