A flower of the ironweed plant.
ironweed definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of a genus (Vernonia) of perennial plants of the composite family, with clusters of small, tubular, purple flowers
Origin: so named from its hard stem
ironweed definition by American Heritage Dictionary
Any of various plants of the genus Vernonia, having alternate leaves and clusters of purplish flower heads.