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San Diego Natural History Museum. SDNHM. Year: 2015.   cc-by-nc-sa-3.0

Helianthus petiolaris (Prairie Sunflower) is a species of annual herb in the family Asteraceae. They have a self-supporting growth form. They are native to The Contiguous United States, Canada, and North America. They have simple, broad leaves. Flowers are visited by Lemonias, Six-spotted Flower Strangalia, Gray Hairstreak, and Common Branded Skipper. Individuals can grow to 3 m.

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EOL has data for 17 attributes, including:

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