Short-lived taprooted perennial herb (annual under adverse conditions) sts woody at base, up to c. 4 dm. tall. Stems us. rather slender, much-branched to simple, glab. to hispid-pilose near base. Lvs subdimorphic, sessile, sts amplexicaul, of diverse size and shape in the ∞ forms; alt. to subopp. Lower lvs (basal us. rosulate, soon falling) ± 1-4 cm. × 2-8 mm., of broad- to linear-spathulate to obovate order, sinuate to undulate, serrate-dentate to entire, pilose to glab. or nearly so; margins thickened, sts distinctly cartilaginous. Upper lvs us. of linear to lanceolate order. Peduncle simple or sparingly to much branched, pedicels long; bracts linear. Fls up to 2 cm. diam., us. smaller; calyx us. narrowly 5-lobed, persistent, lobes (and receptacle) glab. Corolla us. rotate to campanulate, white to pale blue, sts dark blue. Capsule us. 6-10 mm. long, obconic, us. distinctly ribbed.