: any of a genus (Iva) of coarse shrubby composite plants of moist areas in eastern and central North America
Example Sentences
Recent Examples on the WebThese include erect knotweed (not to be confused with its invasive cousin, Asian knotweed), goosefoot, little barley, marsh elder, and maygrass. Annalee Newitz, Ars Technica, 26 Jan. 2018