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Published online by Cambridge University Press: 12 June 2017
Itchgrass [Rottboellia cochinchinensis (Lour.) Clayton ♯ ROOEX] is a large aggressive annual in the Poaceae. This weedy grass is native to Southeast Asia. It now occurs also in tropical and subtropical areas of Australia and Africa and has been introduced into the West Indies and North, Central, and South America. It apparently was introduced into the United States at Miami, Fla. and Lafayette, La. in the early 1900s (1, 6, 7).