Gentianella quinquefolia
Family: Gentianaceae
ague-weed, stiff gentian
Gentianella quinquefolia image
Merel R. Black  
Etymology: Gentianella: little Gentian, reflecting its having been split off from the genus Gentiana because, while very similar, was of a different enough character and measurements to warrant its own genus
Plants: erect, perennial, 3"-16" tall forb
Leaves: stalkless, opposite, lance-shaped
Flowers: purple to white, 4-5-parted, 5/8" long, tubular-shaped with a small opening at the top, no folds between the petals; inflorescence mostly a tall, dense, branched cluster (cyme) at the ends of the stems and branches; blooms Aug.-Oct.
Habitat: dry; prairies, woods; in limy soil
Conservation Status: Native