Plants perennial, densely white villous on all parts except corolla. Taproot thickened, ± carrot-shaped, up to 8 mm in diam. Caudexes branched. Stems caespitose, usually diffuse, 15-30 cm. Leaves alternate, sessile or lower ones with petiole up to 5 mm; blade ovate, elliptic, oblanceolate, or linear-lanceolate, 4-25 × 2-10 mm, base cuneate, margin subentire, crenulate, or serrate, apex obtuse or acute. Flowers several, in a terminal cyme; pedicels 0.5-3 cm, ebracteolate. Hypanthium obdeltoid to broadly obconical, 2-3 × 2-3 mm at anthesis; calyx lobes subulate or narrowly triangular, 3-5 × 1-2 mm, margin entire. Corolla blue, blue-purple, or violet, tubular-campanulate, 10-15 mm, outside villous; lobes 1/2-2/3 as long as tube. Stamens included. Style slightly exserted; stigma 3-fid. Capsule globose or obovoid-globose, 3-5 × 3-4 mm, 10-ribbed, 3-poricidal at base. Seeds brownish yellow, shiny, elliptic, 0.5-0.6 mm, smooth. Fl. and fr. May-Nov.
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