https://indiana.plantatlas.usf.edu/SpecimenDetails.aspx?CollectionID=62348
Bidens bipinnata L. - USA, Indiana (Accession No: 67646) - IPA: Indiana Plant Atlas
The Indiana Plants Atlas is a source of data for the distribution of plants within the state as well as taxonomic, conservation, invasive, and wetland...
bidens bipinnatausaindianaaccessionipa
https://jacksonparkwildflowers.info/plants/bidens/bidens-bipinnata/
Bidens bipinnata - Jackson Park Wildflowers
Aug 21, 2026 - Spanish needles [Blooms: Aug-Sep]
bidens bipinnatajackson parkwildflowers