翼茎水丁香,中国大陆柳叶菜科一归化水生植物

Ludwigia decurrens Walt., A Naturalized Hydrophyte in Mainland China

摘要:

首次报道了在江西省南昌市南昌县与进贤县发现的柳叶菜科原产美洲一归化种： 翼茎水丁香（Ludwigia decurrens Walt.），茎具翼，蒴果方柱形，特征明显，易与国产同属植物区分。对其特征和生境信息进行了描述，并简要讨论了其潜在的入侵风险。

Abstract:

Ludwigia decurrens Walt., native to America, is recently found to be naturalized in Nanchang, Jiangxi Province, China. There is wings on stem and square columnar capsule, it is easy to be distinguished from other species in the same genus of mainland China. The characteristics and habitat of the species are described, and the potential risk of invasion is briefly discussed.