天津5种外来植物新记录

New records of five alien plants in Tianjin

报道了天津5种外来植物新记录,其中,菊科4种,大戟科1种,分别为毒莴苣(Lactuca serriola Linnaeus)、花叶滇苦菜(Sonchus asper(Linnaeus)Hill)、南美鬼针草(Bidens subalternans Candolle)、大狼杷草(Bidens frondosa Linnaeus)和齿裂大戟(Euphorbia dentata Michaux).分别对5种外来植物在天津的地理分布、形态特征、入侵性及防治措施、近似种等进行了报道,以期为天津市外来植物动态监测和科学防治提供重要依据.

Five new records of exotic plants in Tianjin are reported,including four species of Compositae and one species of Euphorbiaceae.They are Lactuca serriola Linnaeus,Sonchus asper(Linnaeus)Hill,Bidens subalternans Candolle,Bidens frondosa Linnaeus,and Euphorbia dentata Michaux,respectively.In this paper,the geographical distribution,morphological characteristics,invasiveness,control measures and similar species of five exotic plants in Tianjin were reported,with a view to provide an important basis for dynamic monitoring and scientific control of exotic plants in Tianjin.