WordNet (3.0) WordNet (3.0)
(n) 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 fever, Syn. Iva xanthifolia, false ragweed
(n) 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, Syn. iva
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