An erect or ascending perennial herb up to 1.2 m. high; stem (or stems) much branched, clothed with somewhat rigid hairs, spreading or retrorse on the lower part, appressed to the upper part as on the branches. Inferior cauline leaves long-petiolate, up to 25 x 3(5) cm., linear-lanceolate to linear-oblanceolate, sometimes narrowly lanceolate, with a petiolar portion up to 7 cm. long (radical leaves not seen). Cauline leaves at middle stem up to 14.0 x 1.5 cm., narrowly lanceolate to linear-lanceolate, hispid-pilose on both surfaces, acute at apex, acute to obtuse at base; midrib and nerves depressed above, prominent below. Cymes usually grouped by two on each peduncle, often with a flower at the fork and arranged in an ample lax panicle. Pedicels c. 2 mm. long, elongating up to 7 mm. and much recurved in fruit. Calyx c. 2 mm. long, shortly hispid outside, ciliate at the margins, devided to near the base; lobes ovate to oblong-elliptic, subacute to rounded at apex, accrescent. Corolla glabrous, blue; tube 1.5–2.0 mm. long; lobes 1.0–1.5 x 1.0–1.5 mm., circular to oblong, rounded at apex, spreading; fornices c. 0.4 x 0.6 mm., slightly bilobed, papillose. Stamens inserted about the middle of the corolla tube; anthers c. 0.5 mm. long, elliptic; filaments about as long as the anthers. Style c. 0.5 mm long; stigma subcapitate. Fruit c. 6 mm. in diam.; nutlets c. 2.5 x 2.0 mm. (without glochids), ovate, slightly marginate, covered all over with glochids.
