Deinbollia onanae (Sapindaceae-Litchi clade) is here formally named and characterised as a new species to science, previously known as Deinbollia sp. 2. Cameroon has the highest species-diversity and species endemism known in this African-Western Indian Ocean genus of 42 species. Deinbollia onanae is an infrequent tree species known from five locations in surviving islands of montane (or upper submontane) forest along the line of the Cameroon Highlands. It is here assessed as Endangered according to the IUCN 2012 standard, threatened mainly by clearance of forest for agriculture. The majority of tree species characteristic of montane forest (above 2000 m alt.) in the Cameroon Highlands are also widespread in East African mountains (i.e. are Afromontane). Deinbollia onanae is one of only a very small number of species that are endemic (globally restricted to) the mountain range. It is postulated that this new species is in a sister relationship with Deinbollia oreophila, which is a frequent species of a lower (submontane) altitudinal band of the same range. It is further postulated that seed dispersal is or was by frugivorous birds, potentially turacos, alternatively by primates such as Preuss s monkey.

中文翻译：

---

Deinbollia onanae（Sapindaceae），一种来自喀麦隆高原的濒临灭绝的新山地树种。

Deinbollia onanae（Sapindaceae-Litchi clade）在这里被正式命名并表征为科学的新物种，以前称为Deinbollia sp。2.在这个非洲西部印度洋属42种中，喀麦隆具有最高的物种多样性和物种特有性。Deinbollia onanae是一种不常见的树种，在喀麦隆高原沿线的山地（或上层山地）森林中尚存的岛屿中的五个位置都知道。根据IUCN 2012标准，这里被评估为濒危物种，主要受到森林砍伐的威胁。喀麦隆高地山地森林（海拔2000 m以上）的大多数树木种类也分布在东非山区（即Afromontane）。凤梨（Deinbollia onanae）是极少数（全球范围内）特有的物种之一。据推测，该新物种与嗜藻Deinbollia oreophila处于姐妹关系，后者是同一范围的一个较低的（地下）海拔带的常见物种。进一步假设种子的散布是食肉类鸟类（可能是斑aco）的，或者是食肉类鸟类的，或者是灵长类动物（例如Preuss的猴子）的种子传播。