单词 | marsh elder |
释义 | marsh elder (once / 1688473 pages) n WORD FAMILY marsh elder 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|Hypo|Hyper iva Iva xanthifolia, burweed marsh elder, 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 fever bog plant, marsh plant, swamp plant a semiaquatic plant that grows in soft wet land; most are monocots: sedge, sphagnum, grasses, cattails, etc; possibly heath |
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