Bidens tripartita is a common and widespread species of plants in the sunflower family, Asteraceae, commonly known as
three-lobe beggarticks, three-part beggarticks, leafy-bracted beggarticks or
trifid bur-marigold. It is native to much of Eurasia, North Africa, and North America, with naturalized populations in Australia and on some Pacific Islands.
(Wikipedia)