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2015 Richard Spellenberg   cc-by-nc-sa-3.0

Ambrosia trifida (Great Ragweed) is a species of annual herb in the family Asteraceae. They have a self-supporting growth form. They are associated with freshwater habitat. They are native to Canada, The Contiguous United States, and The Americas. They have simple, broad leaves. Individuals can grow to 1 m.

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EOL has data for 21 attributes, including:

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