تعريف marsh elder في الإنجليزية الإنجليزية القاموس.
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
Any of several herbs or shrubs of the genus Iva of eastern and central North America, often growing in salt marshes and having nodding, greenish flower heads with unisexual flowers
tall annual marsh elder common in moist rich soil is central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever