Endemic angiosperms in Bahia Coastal Forests, Brazil: an update using a newly delimited area

Abstract: The forest along the coast of Bahia state, in northeastern Brazil, has been acknowledged as an area of endemism for several groups of organisms. The first study concerning endemic angiosperm species in this region, through which 395 taxa were registered, was conducted 15 years ago. However, this number is probably underrated. In this article, we present an updated checklist of angiosperm taxa in Bahia Coastal Forests (BCF) based on geographic distribution data available from the Brazilian Plant List (Flora do Brasil 2020). The records were checked in herbaria, recent taxonomic literature, and, when necessary, reviewed by experts. The final checklist consists of 547 taxa endemic to BCF, distributed in 69 families, with seven endemic genera: Bahiella (Apocynaceae), Santosia (Asteraceae), Harleyodendron (Fabaceae), Cubitanthus (Linderniaceae), Anomochloa and Parianella (Poaceae), and Andreadoxa (Rutaceae). The families with highest richness in endemic taxa were Bromeliaceae (108 spp.), Fabaceae (41 spp.) and Myrtaceae (32 spp.). This updated checklist shares only 143 taxa with a previous list published about 15 years ago. Those two lists differ mostly due to slightly different area limits, and to the large number of additional endemic species described since then. We hope our list will be used as a resource in future studies and contributes to the conservation of the highly diverse Bahia Coastal Forest.摘要：巴西东北部巴伊亚州沿岸森林已被认定为多个生物类群的特有分布区域。15年前，针对该区域特有被子植物（angiosperm）物种开展的首项研究共记录395个分类群，但该数值大概率被低估。本文依托巴西植物名录（Flora do Brasil 2020）中的地理分布数据，提供巴伊亚沿岸森林（Bahia Coastal Forests，BCF）被子植物分类群的更新名录。研究团队对所有记录开展了标本馆（herbaria）核查与最新分类学文献校验，必要时还邀请专家进行复审。最终名录共收录BCF特有分类群547个，隶属于69个科，包含7个特有属：Bahiella（夹竹桃科Apocynaceae）、Santosia（菊科Asteraceae）、Harleyodendron（豆科Fabaceae）、Cubitanthus（母草科Linderniaceae）、Anomochloa与Parianella（禾本科Poaceae），以及Andreadoxa（芸香科Rutaceae）。特有分类群丰富度最高的科为凤梨科（Bromeliaceae，108种）、豆科（Fabaceae，41种）与桃金娘科（Myrtaceae，32种）。本次更新名录与15年前发布的旧名录仅共享143个分类群，二者差异主要源于区域界定标准略有不同，以及此后发表的大量新增特有物种。我们期望本名录可作为未来相关研究的参考资源，并为高度多样的巴伊亚沿岸森林的保护工作提供助力。