Bidens micrantha ssp. kalealaha, of the Asteraceae (sunflower) family, is an erect perennial herb, slightly woody at the base, and 0.5 to 1.5 m (1.6 to 4.9 ft) tall. Leaves are 6 to 19 cm (2.4 to 7.5 in) long with three to seven and sometimes up to nine lance-shaped leaflets, each 2.5 to 10 cm (1...