Phylogeographic and evolutionary studies are necessary to establish solid taxonomic treatments and to implement effective conservation programs. Unfortunately, a well‐argued and well‐founded taxonomic framework is still lacking for some Mediterranean taxa. This is the case of Arenaria section Pseudomoehringia, a group that currently comprises three species endemic to the Iberian Peninsula (A. funiculata, A. suffruticosa, and A. tejedensis) and A. glochidisperma, which is restricted to the Rif mountains, North Africa. However, the taxonomic boundaries and phylogenetic relationships among these species are still uncertain. To explore the evolutionary history and phylogeographic patterns within this section, analyses based on nuclear (amplified fragment length polymorphism and internal transcribed spacer) and plastid DNA markers (psbA‐3’ trnK‐matK and rps16) were performed. Our study has confirmed the monophyly of the section, in which two species are clearly identified (A. funiculata and A. glochidisperma) and an additional species complex (“A. suffruticosa + A. tejedensis complex”) is also supported as a monophyletic clade. The phylogeographic results point toward a dispersal event of a common ancestor of the group from the Iberian Peninsula, giving rise to A. glochidisperma in North Africa. Moreover, A. funiculata and A. glochidisperma are identified as closely related species edaphically differentiated across the Strait of Gibraltar. Our study indicates low levels of a recent gene flow among populations of the “A. suffruticosa + A. tejedensis complex,” which are genetically highly structured and suggest an isolation by distance pattern, probably due to a combination of ecological and geographic barriers. Furthermore, the taxonomic and conservation status of taxa included in Arenaria section Pseudomoehringia has been reviewed.

中文翻译：

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球藻假单胞菌属的系统发育和种系

系谱学和进化研究对于建立可靠的分类学治疗方法和实施有效的保护计划是必不可少的。不幸的是，一些地中海生物分类群仍然缺乏一个经过充分论证和充分根据的分类学框架。这就是阿雷纳里亚部分假单胞菌属的情况，该类群目前包括伊比利亚半岛特有的三个物种（A. funiculata，A。suffruticosa和A. tejedensis）和A. glochidisperma，仅限于北非的里夫山脉。但是，这些物种之间的分类学界限和系统发育关系仍然不确定。为了探索本节中的进化历史和系统地理学模式，基于核（扩增的片段长度多态性和内部转录间隔子）和质体DNA标记（psbA-3'trnK-matK和rps16）进行了分析。我们的研究证实了该部分的单一性，其中清楚地确定了两个物种（A. funiculata和A. glochidisperma），另外一个物种复合体（“ A. suffruticosa  +  A. tejedensis”复合物”）也可以作为单一系统进化枝得到支持。地理学结果表明该群体的共同祖先来自伊比利亚半岛的扩散事件，从而在北非引起了芦苇A. glochidisperma。此外，A. funiculata和A. glochidisperma被确定为海峡两岸直布罗陀水潭分化密切相关的物种。我们的研究表明，A. suffruticosa  +  A. tejedensis种群之间最近的基因流水平较低复杂”，在遗传上高度结构化，建议按距离模式进行隔离，这可能是由于生态和地理障碍的结合。此外，包括在类群的分类和保护状况蚤部分Pseudomoehringia进行了审查。