【摘要】 在对陕西省国家重点保护植物进行普查的过程中,发现1个国家二级重点保护植物(喜树)在陕西省的新分布,这是目前该物种分布报道的最北边界。对发现的新记录种的形态学特征、分布区域生境情况做了详细的描述;比较了我国特有的喜树属植物包括的两个物种和一个变种的形态学区分方式和各自的分布区域;明确了蓝果树科植物所包括的三个属(喜树属,蓝果树属和珙桐属)的区分方式以及在APG系统中三者系统地位的变迁情况。更多还原

【Abstract】 We found a newly recorded national key protected plant species(Camptotheca acuminata Decne.)during the survey of state key protected plant species of Shaanxi province.This is as far as we know the northernmost distribution area of this species.The taxonomic features,habitat conditions and pictures of the newly recorded species were provided.At the same time,the taxonomic features and distributions of the two species and the one variant in genus Camptotheca only found in China were compared.Finally,the taxonomic features and systematic changes in APG system of the three genuses,Camptotheca,Nyssa and Davidiain Nyssaceae,were discussed.更多还原