Chandrasena, J.P.N.R.2010-07-062010-07-061988Journal of the National Science Council of Sri Lanka, 16(1):p.97-103https://dl.nsf.gov.lk/handle/1/6583OnagraceaeBotanical characteristicsFloral characteristicsWeed controlBotanyLudwigia decurrens walt.:a new rice-field weed in Sri LankaArticle