外来入侵杂草——假臭草

Praxelis (Praxelis clematidea):a New Invasive Exotic Weed in China

假臭草[Praxelis clematidea(Grisebach)King et Robinson]属于菊科(Compositae/Asteraceae)植物,原产南美,现入侵亚洲和大洋州等地,入侵各种生境后对生态系统生物多样性及其农业生产造成严重影响,属于区域性恶性杂草。本文介绍和评述了假臭草的植物学特征及分布、主要危害、研究现状、管理对策和防除措施等,并建议积极开展假臭草入侵机制的研究。

Invasive species pose a serious threat to introduced ecosystems and their biodiversity, and cause considerable economic loss to the regions they invaded. Praxelis （Praxelis clematidea （Grisebach） King et Robinson）（Compositae）, an annual or short-lived perennial herb native to South America, already became a noxious weed in Asia and Oceania. And it is spreading rapidly in Southern China now. This species was described and reviewed briefly in relation to biological characteristic, dispersal, hazard, research advances and some strategies in management and control. Its invasive mechanism of Praxelis is suggested to be studied as soon as possible. It is expected that this review could be helpful to prevent and control the spread of Praxelis.