Bidens cernua is a species of flowering plant in the aster family, Asteraceae.[4][5][6][7]Bidens cernua is distributed throughout much of Eurasia and North America.[4][5][6][7] It is commonly called nodding beggarticks[8] or nodding bur-marigold.[9]
Bidens cernua is an annual species growing roughly 1m tall, with a fibrous root. Stems are rigid and often either simple or beached. Stem leaves are simple, unstalked, and opposite.
^Voss, E.G. (1996). Michigan Flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part III: Dicots (Pyrolaceae–Compositae). Vol. Bulletin 61. Ann Arbor, Michigan, U.S.A.: Cranbrook Institute of Science and University of Michigan Herbarium.
