The Bog Beggarticks (Bidens conjuncta) is a species of flowering plant in the sunflower family. It belongs to the genus Bidens, collectively called kokoʻolau or koʻokoʻolau in the Hawaiian language. Bidens conjuncta is found only on western Maui. Its natural habitat are wet forests and bogs. It is threatened by habitat loss due to the spread of invasive weeds and brushfires.