Bidens campylotheca, the viper beggarticks, is a species of flowering plant in the family Asteraceae. It belongs to the genus Bidens, collectively called kokoʻolau or koʻokoʻolau in the Hawaiian language. It is found only in the Hawaiian Islands. Its natural habitat is lowland moist forests. It is threatened by habitat loss due to the spread of invasive weeds and brushfires. Subspecies Bidens campylotheca subsp. campylotheca Bidens campylotheca subsp. pentamera (Sherff) Ganders & Nagata References campylotheca Endemic flora of Hawaii Plants described in 1856 Taxonomy articles created by Polbot