Yellow Bidens (Bidens spp.)
  move mouse over thumbnail to enlarge, click to enlarge to maximum
  • Fall blooming annual
  • Often found in wet areas - these were growing by a roadside ditch
  • White Bidens also common
  • Species is most likely coronata or mitis
  • Identified by Esh_ga, Susanc & Lycopus of Gardenweb