Common Name: dogfennel, tall fennelScientific Name: Eupatorium capillifolium (Lam.) SmallFamily Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cyclenative perennial, reproducing by seed Stemsupright, tall, multiply from base, branching above, becoming woody below, fine pubescent to hairy, sometimes hairless below, often reddish to dark red or purple Leavesopposite below and alternate above, pinnately divided 3 (sometimes 3 or 4) times in fine narrow linear segments, granular dots present, small leaves in axils common, foul smelling Flowersheads of greenish white disk (tubulate) florets, small and inconspicuous; large branched panicles above