Ludwigia decurrens Walt., A Naturalized Hydrophyte in Mainland China

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.

Key words:Onagraceae;Ludwigia;Naturalized species;Jiangxi