伞形科“东亚分支”于2008年由申请人首次提出，该分支在地理空间上以东亚为主体，集中分布于中国喜马拉雅区域。在东亚地区复杂的地质演化历史背景下，目前该分支的范围并未准确界定，分支内部复杂的演化关系也没有解决。而“东亚分支”系统学问题的最终解决，将给芹亚科大系统框架的构建带来新的认识。本研究拟在已有的研究基础上，借助形态学和分子生物学的证据首先界定“东亚分支”的范围，然后建立一个更为合理的分支内部物种演化关系，同时对涉及名称、等级变动的分类单元进行分类学处理。最后将运用DNA barcoding相关技术，建立一套适合于“东亚分支”相关药材的标准鉴定体系。

The "East-Asia Clade" of Apiaceae was first proposed by the applicant in 2008. It is mainly located in East-Asia and concentrated in the Sino-Himalayan region. However, due to the complicated historical background of geological evolution in East Asia, the circumscription of this Clade is not well defined, and the evolutionary relationship within the Clade has also not been resolved. The phylogenetic resolution of the "East-Asia Clade" will bring new insight into the construction of large-scale systematic framework for the subfamily subfamily Apioideae. In this study, we will define the circumscription of the "East-Asia Clade" by combining the morphological and molecular biological evidence, establish a more reasonable relationship of species evolution within the Clade, and carry out nomenclatural transfers. Finally, a set of standard identification system suitable for medicinal materials of "East-Asia Clade" will be established by using DNA barcoding technique.