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Photo by David J. Stang   cc-by-sa-3.0

Vernonia (Ironweed) is a genus of tree in the family Asteraceae. Flowers are visited by Papilio polyxenes asterius, Eastern Tiger Swallowtail, Monarch, and Red Admiral. Individuals can grow to 3 m.

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EOL has data for 8 attributes, including:

Known occurrences, collected specimens and observations of ironweed. View this species on GBIF