O gênero Aeschynomene L. (Leguminosae, Papilionoideae, Dalbergieae sensu lato) no Estado de Goiás, Brasil

• Autor(a) principal: Antunes, Lorena Lana Camelo
• Data de Publicação: 2015
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• dARK ID: ark:/38995/0013000008cjt
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/5129
• topic: Aeschynomene; Cerrado; Endemismo; Leguminosae; Novidades taxonômicas; Aeschynomene; Cerrado; Endemism; Leguminosae; Taxonomic novelties; CIENCIAS BIOLOGICAS::BOTANICA

Subfamilies Caesalpinioideae, Mimosoideae, and Papilionoideae are circumscribed in the Leguminosae, which is cosmopolitan, encompasses approximately 750 genera and 19.500 species, and is the third largest taxon of the Angiosperms. In Brazil, it is the richest family, with 2.756 species and 213 genera, which makes it very important ecologically. Papilionoideae, its largest subfamily, with 478 genera, 13.800 species, and 28 tribes, is monophyletic and traditionally recognized for the papilionaceous flowers, leaves usually imparipinnate or trifoliolate, and legume fruits. Among Papilionoideae tribes, Dalbergieae sensu lato is one of the largest, encompassing 49 genera and ca. 1.325 species, distributed in the clades Adesmia, Pterocarpus, and Dalbergia. The latter is the most diverse, with 706 species distributed in 17 genera, among which Aeschynomene stands out for its complex taxonomy, paraphyletic nature, and high representativeness (ca. 180 species). In Brazil, Aeschynomene is the most diverse genus of Dalbergieae sensu lato, with 49 species. Nonetheless, the taxonomic knowledge of this genus in Brazilian flora is scarce, moreover considering its species that occur in the central part of the country. Based on usual methods, the taxonomic study of Aeschynomene in the state of Goiás. This taxonomic study resulted in the registration of 25 species, one of them new to science (A. veadeirana Silva M. J. & Antunes L. L. C.), nine new occurrences, three synonymizations, and one lectotypification. This dissertation reveals the diversity of Aeschynomene in the state of Goiás and furnishes information to understand the infrageneric and evolutionary relationships in the genus.