REVSYS: Relationships, Diversification, and Monographic study of the Poorly-known Loeselia Clade (Polemoniaceae)

莲子属(Loeselia L.)是凤眼莲科(Phlox)开花植物科(Polemoniaceae)中一个鲜为人知且鲜为人知的谱系，包括两个属：莲子属(Loeselia L.)和大豆属(Daia J.M.Porter)。尽管缺乏对该谱系的详细了解，但Loeselia在关于Polemoniaceae温带成员起源于热带祖先的假说中发挥了关键作用。这项研究计划将提供对Loeselia(22个或更多物种)的更好的了解。对比较DNA序列的初步研究提供了证据，证明Loeselia是由两个基于祖先的物种组成的，对应于Loeselia L.和Daia J.M.Porter。利用叶绿体和核DNA序列、形态和解剖学数据，采用详尽的分类单元取样和密集的相关类群取样，以了解种内和种间的系谱关系。通过这项研究产生的证据将导致一个新的分类系统和第一本全面的黄土属专著，包括检索表、描述、插图、分布图和在线资源。利用相同的数据对性状进化的研究将为分析自交不亲和和花对称等生殖性状的变异提供一个模型，这些性状被认为是开花植物多样性的重要来源。

Loeselia is an obscure and little studied lineage in the flowering plant family Polemoniaceae (phlox family), which includes two genera: Loeselia L. and Dayia J.M. Porter. Despite the lack of detailed knowledge about the lineage, Loeselia has played a pivotal role in hypotheses concerning the origin of temperate members of Polemoniaceae from tropical ancestors. This research program will provide a better understanding of Loeselia (with 22 or more species). Preliminary studies of comparative DNA sequences provide evidence that Loeselia is composed of two groups of species based on ancestry, corresponding to Loeselia L. and Dayia J.M. Porter. Exhaustive taxon sampling within Loeselia and dense sampling of related groups will be used to develop an understanding of genealogical relationships (phylogeny) within and among species, using chloroplast and nuclear DNA sequences, morphological, and anatomical data.Evidence generated through this research will lead to a new classification system and the first comprehensive monographs of Loeselia, including keys, descriptions, illustrations, distribution maps, and on-line resources. The studies of character evolution, using the same data, will provide a model for analyses of variation in reproductive traits such as self-incompatibility and floral symmetry, which is thought to be an important generator of flowering plant diversity.