The Collaborative International Dictionary
Vernonia Noveboracensis
Ironweed \I"ron*weed`\, n. (Bot.) A tall weed with purplish flowers ( Vernonia Noveboracensis). The name is also applied to other plants of the same genus.
Wikipedia
Vernonia noveboracensis
Vernonia noveboracensis (New York ironweed or vein-leaf hawkweed) is a plant in the daisy family, Asteraceae. It is native to the eastern United States, from Florida to Massachusetts and west to Tennessee, Alabama, and West Virginia.