A new species of Leiothrix (Eriocaulaceae) from the Espinhaço Range, Bahia, Brazil

Abstract

A new species of Leiothrix (Eriocaulaceae) from Brazil is described and illustrated. Leiothrix raymondii is a restricted endemic living under the shelter of rocks, in large rocky outcrops, occurring in the Northern part of the Espinhaço range in Bahia state, Brazil. The species is here assessed as endangered. Keywords: rocky field, Leiothrix raymondii, taxonomy ResumoUma nova espécie de Leiothrix (Eriocaulaceae) do Brasil é descrita e ilustrada. Leiothrix raymondii é uma espécie endêmica restrita, que vive na sombra de grandes rochas, nas partes mais altas da porção Sul da Cadeia do Espinhaço no estado da Bahia, Brasil. A espécie é aqui considerada como em Perigo de Extinção.

A multidisciplinaridade para o progresso da ciência

“…Apesar da falta de um consenso sólido que estabeleça de maneira unânime onde inicia e onde finda a Chapada Diamantina, este é, de maneira sucinta, o nome atribuído à porção baiana (e setentrional) da Cadeia do Espinhaço, formação com mais de 1000 km também referida como cordilheira ou planalto por Saadi (1995), que também classifica a formação como um segmento de "terras altas de direção geral norte-sul e convexidade orientada para oeste". GIULIETTI et al, 1987;KAMINO et al, 2008). NUNES et al, 2022).…”

What is being published on floristics? an overview of floristic studies carried out in the Espinhaço Range

“…For example, between 2005 and 2014, 12 new plant species were described yearly, on average (Fernandes et al 2018). In the last ten years, 20 species of Eriocaulaceae were described (Echternacht et al 2011;Echternacht & Sano 2012;Trovó et al 2013;Echternacht 2014;Echternacht & Trovó 2015;Andrino et al 2016;Costa et al 2016;Giulietti et al 2016;Pereira et al 2016;De Oliveira Chagas et al 2019;Andrino et al 2020;Echternacht et al 2021), seven of which are endangered, 12 critically endangered, and one is data deficient, according to authors. The endemic and microendemic species of the campo rupestre are extremely vulnerable to extinction (Rapini et al 2021), a fact that reinforces the need of continuous conservation efforts targeting this flora.…”

Comparative phylogeography reveals the demographic patterns of neotropical ancient mountain species

“…The BQM are home to one of the most biodiverse ecosystems on the globe, the campos rupestres (Conceição et al, 2016;Vasconcelos et al, 2020). This phytophisionomy is found scattered primarily above >900 m elevation and is composed by a xerophytic vegetation, dominated by herbaceous and shrubby species well-adapted to harsh conditions, since most of the soils on the campos rupestres vegetation are shallow and well-drained, with an intense solar radiation and a striking daily temperature variation (Giulietti & Pirani, 1987;Zappi et al, 2017). The BQM mountain ecosystem has attracted the attention of generations of scientists interested in unveiling the evolutionary dynamics that generated such an amazing biota, where the geological stability and ancient climatic oscillations on the BQM are considered the preponderant drivers of its high endemism (Antonelli et al, 2010;Barres et al, 2019;Ribeiro et al, 2014, but A prevailing idea in comparative phylogeography is that codistributed organisms under the effect of similar historical events (e.g., past climatic fluctuations) may exhibit a concordance in several scales, from sites within a genetic locus (i.e., to form a monophyletic group within a gene tree) to concordance between genetic patterns of previously described biogeographic regions (i.e., to support historical factors that have contributed to the concordant distribution of genetic lineages; Avise et al, 1987;Gehara et al, 2017;Soltis et al, 2006).…”

“…The BQM are home to one of the most biodiverse ecosystems on the globe, the campos rupestres (Conceição et al, 2016; Vasconcelos et al, 2020). This phytophisionomy is found scattered primarily above >900 m elevation and is composed by a xerophytic vegetation, dominated by herbaceous and shrubby species well‐adapted to harsh conditions, since most of the soils on the campos rupestres vegetation are shallow and well‐drained, with an intense solar radiation and a striking daily temperature variation (Giulietti & Pirani, 1987; Zappi et al, 2017). The BQM mountain ecosystem has attracted the attention of generations of scientists interested in unveiling the evolutionary dynamics that generated such an amazing biota, where the geological stability and ancient climatic oscillations on the BQM are considered the preponderant drivers of its high endemism (Antonelli et al, 2010; Barres et al, 2019; Ribeiro et al, 2014, but see Rapini et al, 2021).…”