Eupatorium capillifolium
 Eupatorium capillifolium (dogfennel) is a perennial herbaceous plant in the family Asteraceae native to southeastern North America. It is generally between 50 cm and 2 meters tall with several stems that fork from a substantial base. The stems and base are covered in leaves so dissected that they resemble green hairs coming out of the stem in fractal patterns. When crushed the leaves and flowers smell rather unpleasant.