Branching, erect to sprawling herb up to c. 1 m. tall, softly woody towards base; branches and branchlets ascending to spreading. Lvs alt., on petioles up to ± 10 cm. long. Lamina broad-ovate to ovate-oblong to elliptic-ovate, acute to subacuminate, (5)-7-15-(20) × (3)-4-6-10) cm.; membr., glab., or with a few scattered hairs, especially on main veins; margins sharply, finely to rather coarsely irregularly 2-serrate or serrate-dentate. Racemes terminal, (5)-10-15-(20)-fld, on ± pubescent peduncles, often subcorymbose. Fls on slender pubescent pedicels ± 2 cm. long; bracts near base, linear. Calyx-lobes ± 8 mm. long, narrow-triangular to filiform, ciliolate. Corolla ± pubescent, 3-5 cm. long, violet to pale or rather dark blue, or occ. whitish. Lower lip 3-toothed, upper deeply 2-cleft. Stamens connate; filaments free to c. ⅔ way to the awned anthers. Stigma exserted; lobes oblong, spreading, c. 2 mm. long. Berry subglobose, 10-15 mm. diam., blue to whitish.

Erect to spreading, branched herb or subshrub. Stems to c. 1 m tall, somewhat woody towards base. Petioles to 10 cm long. Lamina (5)-7-20-(22) × (3)-4-10-(13) cm, ovate or ovate-elliptic, occasionally elliptic, glabrous or puberulent on main veins, sometimes with scattered hairs elsewhere, coarsely and irregularly serrate-dentate, cuneate or attenuate at base, acute to shortly acuminate at apex. Infl. a terminal, few- to many-flowered raceme clothed in short hairs. Pedicels slender, 1.5-2.5 cm long; bracts often > 5 mm long, linear-subulate. Calyx lobes 5-8 mm long, narrow-triangular to linear-subulate. Corolla 3-5 cm long, usually pale to deep blue or violet, occasionally whitish, deeply lobed with lobes acute; lower lip 3-lobed, hairy; upper lip 2-lobed, the lobes c. 1.5-3.5 cm long and spreading. Fr. 10-15 mm diam., subglobose, blue or, less commonly, whitish.