Fabaceae na Floresta Nacional (FLONA) de Assú, semiárido potiguar, nordeste do Brasil

Abstract

ResumoFabaceae é a família mais diversa na flora do Brasil, inclusive na Caatinga, principal região natural do nordeste brasileiro. Este trabalho consiste no estudo taxonômico da família Fabaceae na Floresta Nacional (FLONA) de Assú, município de Assú, estado do Rio Grande do Norte, Brasil. Foram registradas 37 espécies distribuídas em 22 gêneros e 3 subfamílias: Caesalpinioideae (07 spp.), Mimosoideae (11 spp.) e Papilionoideae (19 spp.), das quais: Poincianella bracteosa, Mimosa camporum, Mimosa sensitiva, Galactia jussiaeana, Stylosanthes humilis e Vigna peduncularis representam novos registros para a flora do Estado. São apresentadas chaves para a separação das espécies, comentários sobre a taxonomia, dados de distribuição geográfica, floração e frutificação, além de ilustrações para as espécies. Palavras-chave: Brasil, Caatinga, florística, Leguminosae, taxonomia. AbstractFabaceae is the most diverse family in the flora of Brazil, including the Caatinga vegetation, the main natural region of the Brazilian Northeastern. This work consists in a taxonomic study of the family Fabaceae at the National Forest (FLONA) of Assú, Assú municipality, Rio Grande do Norte State, Brazil. Thirty seven species in twenty two genera and three subfamilies were recorded: Caesalpinioideae (07 spp.), Mimosoideae (11 spp.) and Papilionoideae (19 spp.), which Poincianella bracteosa, Mimosa camporum, Mimosa sensitiva, Galactia jussiaeana, Stylosanthes humilis and Vigna peduncularis representing new occurrences to the flora of the state. Keys for identification of its species, comments on the taxonomy, geographical distribution and flowering and fructification data, as well as illustrations for the species are presented.

Integrative research identifies 71 new plant species records in the state of Rio Grande do Norte (Brazil) and enhances a small herbarium collection during a funding shortage

“…Some species were originally absent only in RN state, such as Clidemia hirta (Melastomataceae), while others were unknown in several other northeastern Brazilian states, such as Inga vera (Fabaceae) (also unknown in Alagoas and Sergipe) and Amburana cearensis (Fabaceae), which is categorized as endangered (Americas Regional Workshop 1998). Amburana cearensis was recently recorded for RN (Amorim et al 2016) and currently is only absent in Sergipe. We also improved occurrence data of species with restricted distributions, such as Stilpnopappus laiseae (Asteraceae) and Ayenia erecta (Malvaceae), which were previously reported only from Piauí, and Sorghum bicolor var. arundinaceum (Poaceae), which was previously known only from Acre.…”

“…However, the knowledge of RN’s flora is growing rapidly. New species have recently been discovered (Sobral 2010, Araújo and Alves 2013, Lourenço et al 2013, Terra-Araújo et al 2013, Ribeiro et al 2015b, Souza et al 2016) and new occurrences for genera or species have been reported for RN (Versieux et al 2013a, 2013b, São-Matheus et al 2013, Magalhães et al 2014, Amorim et al 2016, Colombo et al 2016, Gomes-Costa and Alves 2016). In five years, the number of species records for RN increased by 78% (BFG 2015).…”

“…Recent taxonomic work has complemented this knowledge by focusing on specific taxonomic groups or on floristic studies. Groups that have been studied recently include Chamaecrista (Queiroz and Loiola 2009), Turneraceae (Rocha et al 2012), Paspalum (Oliveira et al 2013a), Leguminosae-Papilionoideae (São-Mateus et al 2013), Erythroxylaceae (Costa-Lima et al 2014), Capparaceae (Soares-Neto and Jardim 2015), Cyperus (Ribeiro et al 2015a), Fabaceae (Amorim et al 2016), and Bignoniaceae (Colombo et al 2016). Recent floristic studies focused on specific areas or vegetation types, such as the deciduous and semi-deciduous forests (Cestaro and Soares 2004; 2008), savanna (Oliveira et al 2012), riparian vegetation (Oliveira et al 2013b, Ribeiro et al 2014) and the herbaceous vegetation in Seridó (Santana and Souto 2006, Amorim et al 2006, Ferreira et al 2009, Queiroz et al 2015).…”

Fabaceae em um afloramento rochoso no Semiárido brasileiro

“…Para a determinação das subfamílias foi utilizada a chave de identificação do Leguminosae Phylogeny Working Group (LPWG 2017). As identificações de gêneros e espécies foram baseadas em literatura especializada (Nobre et al 2008;Lima et al 2009;Queiroz 2009;Setúbal et al 2010;Lima et al 2011;Dourado et al 2013;São-Mateus et al 2013;Cardoso et al 2014;Ferreira et al 2015;Almeida et al 2015;Silva et al 2015;Amorim et al 2016;Snak & Queiroz 2016;Tozzi 2016). Os tipos de hábitos foram definidos com base em observações em campo.…”

Botanical Composition of Fabaceae Family in the Brazilian Northeast, Maranhão, Brazil

“…The specimens collected and identified by comparison with the material, specialized bibliographies [20,7,21,22,33], books, virtual herbarium and taxonomic keys following the recommended classification methodologies [24,2] and sending samples to specialists in the group for reconfirmation of identification. Proceeding with the species identification, exsiccate assembly, all allocated at Herbarium Prof. Aluízio Bittencourt (HABIT), together, with other Fabaceae family exicts, contained in the herbarium, where all identification and field data stored in exsiccate information sheets, organizing and updating the collection.…”