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New circumscription, morphology and synopsis of Chamaecrista sect. Chamaecrista ser. Coriaceae (Leguminosae)

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Autor(es):
Rando, Juliana Gastaldello [1] ; Pirani, Jose Rubens [2] ; Teixeira Cota, Matheus Martins [3] ; Lewis, Gwilym Peter [4]
Número total de Autores: 4
Afiliação do(s) autor(es):
[1] Univ Fed Oeste Bahia, Ctr Ciencias Biol & Saude, Programa Posgrad Ciencias Ambientais, Rua Prof Jose Seabra Lemos 316, Barreiras, BA - Brazil
[2] Univ Sao Paulo, Dept Bot, Inst Biociencias, Rua Matao 277, Sao Paulo - Brazil
[3] Univ Estadual Feirade Santana, Dept Ciencias Biol, Programa Posgrad Bot, Km 03 BR 116, Campus Feira De Santana, Feira De Santana, BA - Brazil
[4] Royal Bot Gardens, Comparat Plant & Fungal Biol Dept, Richmond TW9 3AB, Surrey - England
Número total de Afiliações: 4
Tipo de documento: Artigo Científico
Fonte: BRITTONIA; v. 71, n. 3, p. 268-298, SEP 2019.
Citações Web of Science: 1
Resumo

A new circumscription of Chamaecrista sect. Chamaecrista ser. Coriaceae is presented based on the results of molecular and morphological analyses. The series is monophyletic upon exclusion of three species that were included within it by Irwin and Barneby. Morphological variation within the series is discussed. Characters previously neglected, such as the detailed morphology of extrafloral nectaries and the position of stamens, are shown to be valuable for taxonomic purposes. The synopsis includes three neotypifications (C. cinerascens, C. mucronata, C. rotundata var. grandistipula), two new synonymizations (C. papillata under C. arrojadoana, and C. rotundata var. grandistipula under C. rotundata var. rotundata), and a new combination (C. arrojadoana). A key for identification of the species, lists of specimens analysed, notes on taxonomy, nomenclature, and geographic distribution of the taxa, as well as illustrations of diagnostic characters are presented. In the new circumscription, the series comprises nineteen species, two of them each further divided into two varieties, to give a total of 21 taxa, distributed mainly in the Brazilian Central Plateau. (AU)

Processo FAPESP: 09/16434-4 - Biogeografia de Chamaecrista Moench. e Filogenia e Revisão de Ch. sect. Chamaecrista ser. Coriaceae (Benth.) H.S. Irwin & Barneby (Leguminosae-Caesalpinioideae)
Beneficiário:Juliana Gastaldello Rando
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 13/09374-0 - Tratamento taxonômico de Chamaecrista sect. Chamaecrista ser. Coriaceae (Benth.) H.S. Irwin & Barneby (Leguminosae)
Beneficiário:Juliana Gastaldello Rando
Linha de fomento: Bolsas no Exterior - Estágio de Pesquisa - Doutorado