Gentiana septemfida

Gentiana septemfida, the crested gentian or summer gentian, is a species of flowering plant in the family Gentianaceae, native to the Caucasus and Turkey. It is a low-growing herbaceous perennial growing to tall by wide, bearing up to eight bright blue trumpet-shaped blooms in summer, with striped interiors. It requires a rich, moist soil and full sun.
The Latin specific epithet "septemfida" means "with seven divisions".
In cultivation this plant and the darker-flowered variety "G. septemfida" var. "lagodechiana" have gained the Royal Horticultural Society's Award of Garden Merit. 