Vriesea is the second largest genus in Tillandsioideae, the most diverse subfamily of Bromeliaceae. Although recent studies focusing on Tillandsioideae have improved the systematics of Vriesea, no consensus has been reached regarding the circumscription of the genus. Here, we present a phylogenetic analysis of core Tillandsioideae using the nuclear gene phyC and plastid data obtained from genome skimming. We investigate evolutionary relationships at the intergeneric level in Vrieseeae and at the intrageneric level in Vriesea s.s. We sampled a comprehensive dataset, including 11 genera of Tillandsioideae and nearly 50% of all known Vriesea spp. Using a genome skimming approach, we obtained a 78 483-bp plastome alignment containing 35 complete and 55 partial protein-coding genes. Phylogenetic trees were reconstructed using maximum-likelihood based on three datasets: (1) the 78 483 bp plastome alignment; (2) the nuclear gene phyC and (3) a concatenated alignment of 18 subselected plastid genes + phyC. Additionally, a Bayesian inference was performed on the second and third datasets. These analyses revealed that Vriesea s.s. forms a well-supported clade encompassing most of the species of the genus. However, our results also identified several remaining issues in the systematics of Vriesea, including a few species nested in Tillandsia and Stigmatodon. Finally, we recognize some putative groups within Vriesea s.s., which we discuss in the light of their morphological and ecological characteristics.

中文翻译：

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的系统学Vriesea（凤梨）：亲缘关系基于核基因和部分原质体系序列

凤梨科是凤梨科最多样化的亚科铁兰科的第二大属。尽管最近针对铁兰科的研究改善了Vriesea的系统性，但关于该属的外切还没有达成共识。在这里，我们使用基因组撇除获得的核基因phyC和质体数据，对铁兰科的核心进行系统发育分析。我们调查了Vrieseeae属间水平和Vriesea ss属内水平的进化关系。我们采样了一个全面的数据集，其中包括铁兰科的11个属和所有已知Vriesea的近50％spp。使用基因组撇取方法，我们获得了一个78 483 bp的质体比对，其中包含35个完整和55个部分蛋白质编码基因。根据三个数据集，使用最大似然法重建系统发育树：（1）78 483 bp质体比对；（2）核基因phyC和（3）18个亚选择质体基因+ phyC的串联比对。另外，对第二和第三数据集执行贝叶斯推断。这些分析表明，Vriesea ss形成了一个支撑良好的进化枝，涵盖了大多数属。但是，我们的结果还确定了Vriesea系统中尚存在的一些问题，包括在铁兰和柱头龙。最后，我们认识到Vriesea s中的一些假定群体，我们根据它们的形态和生态特征对其进行讨论。