American burnweed is a plant in the daisy family. American burnweed is a plant in the daisy family. It is native to the Americas, but is found many places around the world having been introduced by human activity. It is introduced in Hawaii, China, and Southeast Asia. is an annual herb with alternate, simple leaves, on thick, green stems. The leaves are serrated, and range from unlobed to deeply lobed, with the lobe pattern resembling wild lettuces, which are in the same family but not closely related. When crushed, all parts of the plant are aromatic. The flower heads are yellow or pink, borne in fall. The heads are followed by clusters of feathery achenes. The plant often branches and grows in a clump with multiple stems.