Herbs perennial. Flowering stems to 20 cm. Leaf blade oblong, ovate, or elliptic, 1-4.5 X 0.5-2.5 cm, base rounded or cuneate, margin not ciliate. Pedicel 1-1.5 cm. Sepals narrowly elliptic, 3-5 mm. Corolla lilac-blue, tube 0.9-1.1 cm, limb 2.5-3 cm in diam., lobes obliquely truncate. Filaments longer than anthers; anthers puberulent at apex. Follicles erect. Fl. May. 2n = 46.

Jiangsu [introduced from Europe]