Bidens leptocephala
Bidens leptocephala, commonly known as the fewflower beggarticks, is an annual herbaceous flowering plant in the Asteraceae family. It is native to the southwestern United States and northern Mexico.
Description
Bidens leptocephala is an annual herb that typically grows between tall. The opposite leaf blades are long by wide. They are pinnately divided up to 2 times into linear segments. The leaf petioles are up to 4 cm in length. Flower heads are sometimes borne one at a time or in groups of 2 or 3, each head with whitish or yellowish disc florets and sometimes with up to 3 pale yellow ray florets.The species mainly flowers in September.