Slideshow and species account to come.
For more information:
https://gobotany.nativeplanttrust.org/species/bidens/frondosa/
http://www.florafinder.com/Species/Bidens_frondosa.php
https://www.illinoiswildflowers.info/wetland/plants/cm_beggarticks.htm
https://www.minnesotawildflowers.info/flower/devils-beggarticks
