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

Ambrosia trifida (Great Ragweed) is a species of annual herb in the family Asteraceae. They are associated with freshwater habitat. They are native to Canada, The Contiguous United States, and The Americas. Flowers are visited by Cheilosia capillata, Blaesoxipha hunteri, Mallota posticata, and Xylota angustiventris.

show all records
show all records
show all records

EOL has data for 15 attributes, including:

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