Bidens populifolia

Bidens populifolia
Oʻahu Beggarticks
Conservation status
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Subfamily: Asteroideae
Tribe: Heliantheae
Subtribe: Coreopsidinae
Genus: Bidens
Species: B. populifolia
Binomial name
Bidens populifolia

The Oʻahu Beggarticks or Poplar-leaved Bidens (Bidens populifolia) 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 Koʻolau Range on Oʻahu.

Its natural habitat are montane tropical moist forests, tropical moist shrubland, and rocky areas. It is threatened by habitat loss due to the spread of invasive weeds and overgrazing.


  • Bruegmann, M.M. & Caraway, V. (2003). Bidens populifolia. 2006. IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 20 July 2007.