Abstract: A cladistic analysis of the genus Quercus L. in China was performed based on leaf epidermis and architecture using Trigonobalanus doichangensis (A. Camus) Farman as an outgroup. Some stable relationships among subgenera and species were indicated by the cladistic analysis. Subgen. Quercus were divided into g\five sections, namely Sect. Engleriana,Sect. Brachylepides, Sect. Echinolepides, Sect. Aegilops, and Sect.

Key words: Quercus

摘要： 以三棱栎为外类群,基于叶表皮及叶结构特征对中国栎属进行初步的分支分析.结果显示了栎属内稳定的支结构及其种间关系.栎亚属可划分为5个组,分别为巴东栎组、高山栎组、?子栎组、麻栎组和槲栎组.?子栎组是栎亚属常绿栎类与落叶栎类之间的过渡类群;高山栎组应为栎亚属常绿栎类中的特化类群,而非最原始类群.5个组中,仅巴东栎组不是单系类群,而是一个多系类群.青冈亚属较栎亚属早分支,可划分为3大类:无毛类、简单被毛类和复杂被毛类;无毛类最原始,复杂被毛类与栎亚属关系最近.因此,叶表皮及叶结构特征对解决栎亚属组间亲缘关系有重要的分类学意义

关键词: 栎属, 叶表皮及叶结构, 分支分析