Abstract Detail


Iganci, Joao [1], Soares, Marcos Vinicius B. [2], Guerra, Ethiéne [3], Morim, Marli Pires [4].

Reestablishment and new circumscription of Jupunba and Punjuba (Leguminosae, Caesalpinioideae, mimosoid clade) based on morphological and phylogenetic evidence.

Along the time, many mimosoid legumes genera had complex taxonomic histories, including Abarema that stands out by the numerous nomenclatural changes. Abarema s.l. is a Neotropical genus that comprises c. 50 species, with centres of diversity in the Amazon and Atlantic rain forests. Recent phylogenetic studies demonstrated the non-monophyly of Abarema, which was shown to be polyphyletic with species traditionally recognized under the genus placed in three main clades that are intermingled with other genera of the former tribe Ingeae. The type species of Abarema grouped with Inga, Macrosamanea, Enterolobium p.p., Zygia and Blanchetiodendron, whereas the other two clades correspond to the former genera Jupunba and Punjuba. The aim of this study was to build a phylogenetic tree of Abarema s.l. supporting the reinstatement of Jupunba and Punjuba, based on morphological and phylogenetic evidence, and to carry out a nomenclatural overhaul of the species and implement necessary typifications. For Punjuba we reinstate three species and add three new combinations. Jupunba comprises 37 species, of which eight are reinstated; in addition, the resurrection of one species with a new synonym is proposed and 29 new combinations are made. In total, 63 taxa are revised, including accepted names, synonyms and excluded names. A taxonomic key is presented for the identification of Punjuba, Jupunba and related genera. We present 40 new combinations, one new taxonomic status and 18 corrections of nomenclature category for lectotypes and two neotypes. One lectotype is designated, one species is reinstated with a new synonym and a second step neotypification is made. We located 97 unreported types during the revision.

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1 - Federal University of Pelotas, Botany, Rua Cidade do Porto 1276, Pelotas, Rio Grande do Sul, 96083150, Brazil
2 - Federal University of Rio Grande do Sul, Botany, Av. Bento Gonçalves 9500, Porto Alegre, Rio Grande do Sul, 90035006, Brazil
3 - AVENIDA PROTÁSIO ALVES, 2195 Apt. 403, PORTO ALEGRE, RS, 90410-002, Brazil
4 - Jardim Botânico do Rio de Janeiro, Systematics, Rua Pacheco Leão 915, Rio de Janeiro, Rio de Janeiro, 22460030, Brazil


Presentation Type: Oral Paper
Number: SYST II001
Abstract ID:318
Candidate for Awards:None

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