Much-branched, biennial or short-lived perennial. Stems to c. 50 cm high, densely clothed in spreading hairs. Lower lvs usually elliptic-spathulate or obovate, less commonly ovate; lamina to c. 10 × 4 cm, often densely hairy; base attenuate to the indistinct petiole; apex obtuse, mucronulate. Upper lvs smaller and narrower. Cymes usually ebracteate, elongating after flowering. Pedicels 1.5-2× length of calyx at fruiting. Calyx 3-5 mm long, campanulate; tube with spreading, hooked hairs; teeth triangular or lanceolate, 1/2-3/4 length of tube. Corolla tube usually slightly > calyx tube; limb 6-11 mm diam., flat or nearly so, usually blue, rarely white; scales in throat yellow; lobes rounded. Style 1.5-2.3 mm long, > calyx tube. Nutlets c. 1.7-2 × 1 mm, ovoid, dark brown; rim present.