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首页> 外文期刊>Systematic Botany >A Partial Taxonomic Revision of the Rhynchocarpa Clade of Commiphora (Burseraceae) Endemic to Madagascar
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A Partial Taxonomic Revision of the Rhynchocarpa Clade of Commiphora (Burseraceae) Endemic to Madagascar

机译：马达加斯加特有的Com科（杜鹃花科）Rhynchocarpa进化枝的部分分类学修订。

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摘要

Recent molecular phylogenetic studies of Commiphora (Burseraceae) have revealed a complex history of species evolution in this genus, which includes four separate invasions of Madagascar. Two of these invasions have resulted in radiations of species that are not well-characterized taxonomically due in part to a lack of sufficient herbarium collections. Recent work has also revealed that morphological characters that have been used historically to circumscribe species of this genus have proven insufficient for distinguishing the closely related Malagasy species of these radiations. In this study we present a partial taxonomic revision for the most species-rich of these clades, the 'Rhynchocarpa' clade, which contains at least 26 species united by numerous molecular synapomorphies yet lack a shared, derived suite of morphological traits. Here, we revise seven 'Rhynchocarpa' species that are united by the presence of stellate pubescence on vegetative and reproductive parts of the plant, a trait that is uncommon in the genus and a practical metric for limiting the scope of the revisionary work. We include five new species, including four new names (Commiphora andranovoryensis, Commiphora elliptica, Commiphora morondavensis, and Commiphora razakamalalae) and a name currently in use, correctly published (Commiphora falcata). We provide morphological descriptions, distributional information, and conservation assessments for these as well as Commiphora aprevalii and Commiphora stellulata. We designate a lectotype for Commiphora stellulata. A key to the seven species is included. We envision this contribution as the first in a series of clade-based revisions that clarify the taxonomy of Malagasy Commiphora.
机译：最近对孔雀科（Burseraceae）的分子系统发育研究表明，该属的物种进化历史复杂，其中包括马达加斯加的四次独立入侵。这些入侵中的两次已导致辐射的物种分类学上未能很好地表征，部分原因是缺乏足够的植物标本室集合。最近的工作还表明，历史上已用来限制该属物种的形态特征已被证明不足以区分这些辐射的密切相关的马达加斯加物种。在这项研究中，我们针对这些进化枝中物种最丰富的部分（“ Rhynchocarpa”进化枝）进行了部分分类学修订，其中包含至少26个物种，这些物种由许多分子同形体联合而成，但缺乏一套共享的衍生形态学特征。在这里，我们修改了七个'Rhynchocarpa'物种，它们通过在植物的营养和生殖部分上出现星状短柔毛而结合在一起，该特性在属中并不常见，并且是限制修订工作范围的实用指标。我们包括了五个新物种，其中包括四个新名称（Commiphora andranovoryensis，Commiphora elliptica，Commiphora morondavensis和Commiphora razakamalalae）和一个正在使用且正确发布的名称（Commiphora falcata）。我们提供了形态学描述，分布信息和保护性评估，以及Commiphora aprevalii和Commiphora stellulata。我们为Commitphora stellulata指定一个选型。其中包括七个物种的关键。我们设想此贡献是基于进化枝的一系列修订中的第一个，阐明了马达加斯加语Commiphora的分类法。

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