false ragweed

Thesaurus

Noun

1.false ragweed - tall annual marsh elder common in moist rich soil in central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay feverburweed marsh elder, Iva xanthifoliaiva, marsh elder - any of various coarse shrubby plants of the genus Iva with small greenish flowers; common in moist areas (as coastal salt marshes) of eastern and central North America