Asteraceae. Forb. Leaves opposite. Leaves deeply lobed with many lobes. Soft pubescence is often present. Seedhead is usually a tight inflorescence at the top of the stalk, but will occasionaly branch at the leaf axils. Similar species is Ambrosia coronopifolia. A. coronopifolia is not as deeply lobed and has fewer lobes. Found in fields A, B and E.