裸冠菊属:华东地区一新归化属

Gymnocoronis:a new naturalized genus in Eastern China

在浙江岱山县高亭镇发现了一个华东地区新归化属:裸冠菊属Gymnocoronis DC.。裸冠菊G.spilanthoides(D.Don ex Hook.et Arn.)DC.为多年生水生或湿生草本,生于塘池、路边草丛中。频繁的海外贸易可能是该种植物带入的原因,该种植物主要是通过货船、游客、交通工具等途径侵入华东境内的。该植物的危害性为①严重影响其他植物的正常生长,使生物多样性大幅度降低;②容易引起河道阻塞;③影响湿地生态景观。建议加强检疫,做好监测,强化宣传,并积极除治。

Gymnocoronis DC.,a new naturalized genus in Eastern China was discovered in Gaoting Town,Daishan,Zhejiang Province.G.spilanthoides（D.Don ex Hook.et Arn.） DC.is a perennial hydrophyte or hygrophyte herb,which grows in the pool or in the roadside grass.Perhaps the frequent overseas trade is one reason of this plant＇s invasion.This plant mainly invade into Eastern China by cargo,tourists,transportation,etc.The dangers of this plant are（1） seriously affect the normal growth of other plants and enormously reduce the biodiversity;（2） easily block the channel of the river;（3） may badly affect the wetland landscape.The suggestion is that we should strengthen the quarantine,do well monitoring and widely publicity and make positive contributions to prevent and cure.