中文摘要：

Toxicodendron 是在有在东方亚洲和北美洲之间的分离分布的 Anacardiaceae 的 Rhus 建筑群的一个类，延长到东南的亚洲和 neotropics。原子(内部抄录分隔符，外部抄录分隔符，和 NIA-i3 ) 并且叶绿体(ndhF 和 trnL-F ) 序列被用来构造 Toxicodendron 的种系发生的关系。这些数据的种系发生的分析强烈支持从 Rhus 建筑群的另外的类不同的一个单音的门的组，和发展史充分不支持的 Toxicodendron 在部分水平的分类。二个适度的分离的系被检测，在东方北美的 Toxicodendron 之间的从节 Toxicodendron 的和其它 vernix 和东方亚洲 Toxicodendron vernicifluum。他们的分叉时间被估计是 13.46 (7.95 19.42 ) 并且 7.53 (2.76 12.86 ) 我的一分别地。在节 Griffithii 之间的分离(税一 from 温暖对热带亚洲适度) 并且 Toxicodendron 条纹弦音器(从 neotropics ) 被支持，他们的分叉时间被估计是 20.84 (11.16 30.52 ) 我的一在里面早中新世。我们的简历地理结果和苍白的本体论的数据作为最可能的线路支持 Bering 陆地桥解释适度的分离，然而，在 Toxicodendron 的热带分离似乎被诺思大西洋陆地桥假设最好解释。

英文摘要：

Toxicodendron is a genus in the Rhus complex of Anacardiaceae with a disjunct distribution between eastern Asia and North America, extending to southeastern Asia and the neotropics. Nuclear （internal transcribed spacer, external transcribed spacer, and NIA-i3） and chloroplast （ndhF and trnL-F） sequences were used to construct phylogenetic relationships of Toxicodendron. Phylogenetic analysis of these data strongly support Toxieodendron as a monophyletic group distinct from other genera of the Rhus complex, and the phylogeny does not fully corroborate classification at the sectional level. Two temperate disjunct lineages were detected, one from section Toxicodendron and the other between the eastern North American Toxicodendron vernix and the eastern Asian Toxicodendron vernieifluum. Their divergence times were estimated to be 13.46 （7.95-19.42） and 7.53 （2.76-12.86） mya, respectively. The disjunction between section Griffithii （taxa from warm temperate to tropical Asia） and Toxieodendron striatum （from the neotropics） was supported and their divergence time was estimated to be 20.84 （11.1 6-30.52） mya in the early Miocene. Our biogeographic results and the paleontological data support the Bering land bridge as the most likely route to explain the temperate disjunctions, yet the tropical disjunction in Toxicodendron seems to be best explained by the North Atlantic land bridge hypothesis.