Plants perennial. Roots thickened, carrot-shaped. Stems several, caespitose, ascending, 6-23 cm tall, villous, usually branched. Basal leaves long petiolate; blade ovate or orbicular, 5-24 × 6-27 mm, adaxially villous, base cordate or truncate, margin crenate or callose-denticulate, apex obtuse or rounded. Lower cauline leaves long petiolate; blade ovate or orbicular, 5-7 × 4-6 mm, base cordate or truncate, apex obtuse or rounded. Middle and upper cauline leaves petiolate or sessile; blade lanceolate or narrowly oblong, margin callose-dentate. Flowers terminal, often upright. Hypanthium obovoid or obconic, sparsely villous or sometimes glabrous, base rounded; lobes narrowly oblong to subulate-triangular, 2-6 mm, margin with 1-3 pairs of teeth. Corolla purple or blue-purple, broadly campanulate, 9-20 mm; lobes ca. 1/2 as long as tube. Capsule obovoid, ellipsoid, or subglobose, 4-8 mm. Seeds brown-yellow, oblong-elliptic, ca. 0.5 mm, 1-ribbed, smooth. Fl. and fr. Aug-Oct.
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