See also Aquilegia on Wikipedia, and the disclaimer.

Columbine (kŏl′ŭm-bīn), a well-known and popular wild flower, which is widely diffused, and which has been suggested as the national flower of the United States. The leaflet is three-lobed and the flower, which passes from yellow to red, has five petals with long spurs, giving it a striking resemblance to the liberty-cap.