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A perennial plant (Lythrum salicaria) native to Eurasia, having long spikes of purple flowers. It is naturalized in North America and often forms dense stands in wetlands.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an Old World wetland plant, Lythrumsalicaria, of the loosestrife family, having spikes of reddish purple flowers.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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|Noun||1.||purple loosestrife - marsh herb with a long spike of purple flowers; originally of Europe but now rampant in eastern United States|
loosestrife - any of numerous herbs and subshrubs of the genus Lythrum
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