Li Yi-Rong, Xu Yan-Ling, Fritsch Peter W, Lu Lu
School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products Kunming Medical University Kunming Yunnan China.
Botanical Research Institute of Texas Fort Worth Texas USA.
Ecol Evol. 2023 Jun 9;13(6):e10178. doi: 10.1002/ece3.10178. eCollection 2023 Jun.
and its varieties form a clade of aromatic shrubs that is widely distributed in subtropical and East Asian tropical regions. The group is taxonomically difficult and in need of thorough taxonomic investigation. This study focused on taxonomic delimitation within the group from mainland China. Field surveys covering the distributional range of in mainland China were conducted, wherein four populations from Yunnan and one from Hunan were found bearing morphological and habitat differences. A 63-species phylogenetic tree of based on one nuclear and three chloroplast markers that included samples from the group was reconstructed with maximum likelihood to clarify the monophyly of the group. Taxonomic relationships among populations were investigated with morphology and population genetics, the latter by using two chloroplast genes and two low-copy nuclear genes. Based on the sum of morphological and genetic analyses, we described three species of as new to science, clarified the taxonomic status of var. , elevating it to the species level, and resurrected and treated the varieties var. , and var. as synonyms of this species. We provide a key to the five species now recognized, along with descriptions and photographs.
其变种形成了一个芳香灌木分支，广泛分布于亚热带和东亚热带地区。该类群在分类学上存在困难，需要进行全面的分类学研究。本研究聚焦于中国大陆该类群的分类界定。对中国大陆该植物分布范围进行了实地调查，发现来自云南的四个种群和来自湖南的一个种群存在形态和生境差异。基于一个核基因和三个叶绿体标记构建了一个包含该类群样本的63个物种的系统发育树，采用最大似然法进行重建，以阐明该类群的单系性。利用形态学和群体遗传学研究了种群间的分类关系，后者使用了两个叶绿体基因和两个低拷贝核基因。基于形态学和遗传学分析的结果，我们描述了该植物的三个新物种，明确了变种的分类地位，并将其提升到物种水平，同时恢复了物种，并将变种、变种和变种作为该物种的同义词进行处理。我们提供了目前认可的五个物种的检索表，以及描述和照片。
