Wordnet 3.0
NOUN (1)
1.
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: burweed marsh elder, false ragweed, Iva xanthifolia]
WordNet (r) 3.0 (2006):
Iva xanthifolia
n 1: 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: burweed marsh elder, false ragweed, Iva
xanthifolia]