ironweed definition

  • noun:
    • any one of various plants of genus Vernonia, having alternative leaves and groups of purplish flower minds.
    • some of certain species of the genus Vernonia of forbs and shrubs.
    • A tall weed with purplish blossoms (Vernonia Noveboracensis). The name is also applied to other plants of the same genus.
    • Same as flattop.
    • In addition, some of the species of the genus Vernonia, handsome composite flowers of the united states. See Vernonia.
    • The blue vervain, Verbena hastata.
    • The black knapweed, Centaurea nigra. Also referred to as ironhead.
    • any of various plants associated with the genus Vernonia of tropical and hot parts of especially united states that take their title from their particular free minds of purple to rose flowers that quickly undertake a rusty hue

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  • Definition for "ironweed"
    • any one of various plants of genus Vernonia,…
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