Flora da Bahia: Leguminosae – Enterolobium (Clado Mimosoide: Ingeae)

We present the taxonomic treatment of the genus Enterolobium for the state of Bahia, Brazil. Five species were recorded, for which we provide an identification key, descriptions, comments, data on the period of fruiting and flowering, as well as illustrations and maps of geographical distribution in Bahia.Apresentamos o tratamento taxonômico do gênero Enterolobium para o estado da Bahia, Brasil. Foram registradas cinco espécies, para as quais fornecemos uma chave de identificação, descrições, comentários, dados do período de floração e frutificação, além de ilustrações e mapas de distribuição geográfica na Bahia

Boliviadendron, a new segregate genus of mimosoid legume (Leguminosae, Caesalpinioideae, mimosoid clade) narrowly endemic to the interior Andean valleys of Bolivia

Phylogenetic analyses of DNA sequence data sampling all species of Leucochloron alongside representatives of genera of the Inga and Albizia clades of the larger ingoid clade of mimosoid legumes (sensu Koenen et al. 2020) confirm the non-monophyly of the genus Leucochloron. We show that Leucochloron bolivianum is placed in the Albizia clade, while the remaining four species of Leucochloron are placed in the Inga clade, in line with previous results. To rectify this non-monophyly, L. bolivianum is segregated as the new genus, Boliviadendron, with a single species, Boliviadendron bolivianum, narrowly endemic to the interior Andean valleys of Bolivia. We illustrate this new segregate genus, present a map of its distribution and discuss the striking lack of morphological distinctions between Boliviadendron and Leucochloron, as well as the phylogenetic and morphological affinities of Boliviadendron to the genera Enterolobium and Albizia

O COMPLEXO PITHECELLOBIUM (LEGUMINOSAE: MIMOSOIDEAE) NA CAATINGA DO ESTADO DA BAHIA. |, O GÊNERO ENTEROLOBIUM MART.

A taxonomia do grupo Pithecellobium é muito complexa por ser baseada, quase exclusivamente, em caracteres de frutos e sementes. No entanto, caracteres vegetativos e florais, embora pouco utilizados para diagnosticar gêneros e espécies, podem ser de grande utilidade para identificação destes táxons & nível regional. Este trabalho tem, portanto, o objetivo de fazer um levantamento das espécies do grupo Pithecellobinm na caatinga da Bahia e produzir chaves de identificação que usem, principalmente, caracteres vegetativos. São apresentados os resultados referentes a um dos gêneros deste grupo, Enterolobium, o qual apresenta duas espécies na caatinga baiana: E. contortisitiquum e E. timbouva. Além dos carpológicos, foram selecionados os seguintes caracteres como utéis para identificação destes táxons: persistência dos parafilídios, localização dos nectários extraflorais, número de foliólulos por pina, comprimento do pedúnculo e indumento do perianto

Molecular and Morphological Analysis Supports the Separation of Robrichia as a Genus Distinct from Enterolobium (Leguminosae: Caesalpinioideae: Mimosoid Clade).

As currently circumscribed, the legume genus comprises 11 species in two sections: sect. and sect. , with an overall distribution from Mexico to Argentina and a centre of diversity in Amazonia. In the absence of the characteristic indehiscent fruits, is difficult to distinguish from other genera in the ingoid clade, including sensu lato, , and . Previous phylogenetic studies which have included have sampled few species of the genus, leaving questions about its monophyly and interspecific relationships. Here we evaluate the circumscription of and its two infrageneric taxa, their phylogenetic placement in the ingoid clade, and interspecific relationships within the two sections of the genus. Our study includes all species, and analyses of nuclear (ITS and ETS) and plastid ( and ) molecular regions, and morphology. Bayesian inference, maximum parsimony, and maximum likelihood analyses show that , as presently circumscribed, is not monophyletic. The genus is divided into two well-supported independent clades, corresponding to the two previously recognized sections; one of them is sister to the genus and is here raised to generic rank as the genus , with three species, , and . The genus consequently now comprises eight species and is more closely related to a clade composed of and . This new arrangement is reinforced by morphological synapomorphies recovered by ancestral character state reconstructions. Indumentum type, the number of pinnae pairs per bipinnate leaf and leaflet pairs per pinna, inflorescence type, and fruit shape characterize , while the recognition of remains based on fruit traits. We also provide the formal lectotypifications for , , , , , and

Boliviadendron, a new segregate genus of mimosoid legume (Leguminosae, Caesalpinioideae, mimosoid clade) narrowly endemic to the interior Andean valleys of Bolivia

Phylogenetic analyses of DNA sequence data sampling all species of Leucochloron alongside representatives of genera of the Inga and Albizia clades of the larger ingoid clade of mimosoid legumes (sensu Koenen et al. 2020) confirm the non-monophyly of the genus Leucochloron. We show that Leucochloron bolivianum is placed in the Albizia clade, while the remaining four species of Leucochloron are placed in the Inga clade, in line with previous results. To rectify this non-monophyly, L. bolivianum is segregated as the new genus, Boliviadendron, with a single species, Boliviadendron bolivianum, narrowly endemic to the interior Andean valleys of Bolivia. We illustrate this new segregate genus, present a map of its distribution and discuss the striking lack of morphological distinctions between Boliviadendron and Leucochloron, as well as the phylogenetic and morphological affinities of Boliviadendron to the genera Enterolobium and Albizia

Growing knowledge: an overview of Seed Plant diversity in Brazil

Abstract An updated inventory of Brazilian seed plants is presented and offers important insights into the country's biodiversity. This work started in 2010, with the publication of the Plants and Fungi Catalogue, and has been updated since by more than 430 specialists working online. Brazil is home to 32,086 native Angiosperms and 23 native Gymnosperms, showing an increase of 3% in its species richness in relation to 2010. The Amazon Rainforest is the richest Brazilian biome for Gymnosperms, while the Atlantic Rainforest is the richest one for Angiosperms. There was a considerable increment in the number of species and endemism rates for biomes, except for the Amazon that showed a decrease of 2.5% of recorded endemics. However, well over half of Brazillian seed plant species (57.4%) is endemic to this territory. The proportion of life-forms varies among different biomes: trees are more expressive in the Amazon and Atlantic Rainforest biomes while herbs predominate in the Pampa, and lianas are more expressive in the Amazon, Atlantic Rainforest, and Pantanal. This compilation serves not only to quantify Brazilian biodiversity, but also to highlight areas where there information is lacking and to provide a framework for the challenge faced in conserving Brazil's unique and diverse flora