Description from Flora of China
Herbs annual or biennial, 25-40 cm tall, with straight roots. Stems single or several, cespitose, branched from base, spreading hispid and appressed pubescent; branches usually slender. Basal leaves petiolate, obovate-oblong, 2-5 cm, base attenuate, apex obtuse; stem leaves sessile, oblong to ovate-lanceolate, 2-4 cm × 5-10 mm, minutely hispid, hairs discoid at base. Inflorescences terminal and axillary, 10-20 cm, flowers and bracts individually secund; bracts oblong to ovate-lanceolate, 0.5-1.5 cm × 3-5 mm, hispid, short appressed pubescent. Pedicel pendulous, 2-3 mm, scarcely elongated in fruit. Calyx 2.5-3 mm, densely hispid outside; lobes lanceolate. Corolla blue to pale blue, 3-4 mm; throat appendages trapeziform, ca. 0.8 mm, retuse at apex; limb 4-5 mm wide; lobes orbicular. Filaments inserted ca. 1 mm above base; anthers oblong, ca. as long as appendages. Style terete, ca. 1/3 as long as calyx. Nutlets ellipsoid-ovoid, ca. 2 mm, densely tuberculate, aperture longitudinally elliptic. Fl. May-Jul.
* Hillsides, roadsides, riverbeds, forest margins, thickets, shaded moist places; 300-2100 m. Gansu, Hebei, Heilongjiang, Jiangsu, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, Yunnan.