Dogfennel (Eupatorium capillifolium) is a species of plant in the Asteraceae, an annual herb, up to 2 meters tall, with several stems branching from the base and stout, the base covered with green thread-like leaves branching out from the stem in a fractal pattern.
E. capillifolium has leaves with a sour odor similar to dill pickles. The flowers have a mild odor. This species thrives on roadsides, fields and disturbed areas.
Kingdom: Plantae
Phylum: Tracheophyta
Subphylum: Angiospermae
Class: Magnoliopsida
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Eupatorieae
Subtribe: Eupatoriinae
Genus: Eupatorium
Species: Eupatorium capillifolium