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类生物的特有物种分布区。15年前，该区域首次开展了关于特有被子植物的研究，共记录395个分类群，但该数量可能被低估。本研究基于巴西植物名录（Flora do Brasil 2020）公开的地理分布数据，更新了巴伊亚州沿岸森林（Bahia Coastal Forests，BCF）的被子植物分类群名录。所有记录均经标本馆、最新分类学文献核查，必要时由专家审定。最终名录共收录547个巴伊亚州沿岸森林特有分类群，隶属于69个科，包含7个特有属：巴希木属（Bahiella，夹竹桃科Apocynaceae）、桑托斯菊属（Santosia，菊科Asteraceae）、哈雷豆属（Harleyodendron，豆科Fabaceae）、古巴母草属（Cubitanthus，母草科Linderniaceae）、异颖草属（Anomochloa）与帕里安草属（Parianella，禾本科Poaceae），以及安德里亚花属（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）。本更新名录与15年前发布的旧名录仅共享143个分类群。两份名录的差异主要源于区域界定略有不同，以及此后大量新描述的特有物种。我们期望本名录可作为未来研究的参考资料，并为高度多样的巴伊亚州沿岸森林的保护工作提供助力。