noun \-ˌwēd\

Definition of IRONWEED

:  any of a genus (Vernonia) of mostly weedy composite plants usually having alternate leaves and perfect red, purple, or white tubular flowers in terminal cymose heads

First Known Use of IRONWEED



noun    (Concise Encyclopedia)

Western ironweed (Vernonia fasciculata)—Dan Morrill

Any of about 500 species of perennial plants constituting the genus Vernonia (family Asteraceae). Small herbaceous (nonwoody) species are found throughout the world; shrubs and trees are found primarily in tropical regions. Ironweed species have lance-shaped, toothed leaves that alternate along the stem; clusters of flower heads composed only of disk flowers (no ray flowers); and a ring of overlapping bracts below the flower heads. Some autumn-blooming species are cultivated as border plants for their attractive white, purple, or pink flower clusters.


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