中国禾本科植物新资料(Ⅱ)  

Notes on the Family Poaceae in China(Ⅱ)

作　　者：张悦 张谢勇 胡长松 孙国峰[5] 陈文俐[1] ZHANG Yue;ZHANG Xieyong;HU Changsong;SUN Guofeng;CHEN Wenli(State Key Laboratory of Systematic and Evolutionary Botany,Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China;School of Life Sciences,Zhengzhou University,Zhengzhou 450001,Henan,China;University of Chinese Academy of Sciences,Beijing 100049,China;Taizhou Customs,Taizhou 225300,Jiangsu,China;Institute of Botany,Chinese Academy of Sciences,Beijing 100093,China)

机构地区：[1]中国科学院植物研究所系统与进化植物学国家重点实验室,北京100093 [2]郑州大学生命科学学院,郑州450001 [3]中国科学院大学,北京100049 [4]泰州海关,江苏泰州225300 [5]中国科学院植物研究所,北京100093

出　　处：《热带亚热带植物学报》2022年第3期402-406,共5页Journal of Tropical and Subtropical Botany

基　　金：国家自然科学基金项目(31970207);国家重点研发计划项目(2018YFC0506903)资助。

摘　　要：报道了我国境内新发现的2种外来禾草:宽叶臂形草[Brachiaria platyphylla(Munro ex C.Wright)Nash]和车前臂形草[B.plantaginea(Link)Hitchc.],这2物种有时被处理为尾稃草属(Urochloa)的成员。依据小穗第一颖背部具向轴性,第二外稃先端不具小尖头的形态特征,认为他们更接近于国产臂形草属(Brachiaria)的物种,编制了他们与国产近缘物种、属的分类检索表,并讨论了2外来种的潜在入侵风险。Two exotic weeds,Brachiaria platyphylla(Munro ex C.Wright)Nash and B.plantaginea(Link)Hitchc,are firstly reported in China.They share the characters of the lower glume adaxial and the upper lemma obtuse with Chinese Brachiaria species,without the characters of the abaxial lower glume,long mucro upper lemma of Urochloa species.The taxonomic differences among these two new record grasses and the other Brachiaria species from China are edited in one key.Their potential invasion risks are discussed.

关 键 词：宽叶臂形草 车前臂形草 入侵物种 新记录 

分 类 号：Q949.714.2[生物学—植物学]