Description from Flora of China
Bothriospermum decumbens Kitagawa.
Herbs annual, 15-40 cm tall. Stems several, cespitose, erect or prostrate, much branched from below, spreading hispid and short appressed pubescent. Basal leaves rosulate, oblanceolate to spatulate, 4-7 cm × 5-10 mm, sparsely hispid and appressed pubescent, base attenuate, margin undulate, finely dentate, apex obtuse; stem leaves sessile, oblong to linear-oblanceolate, 2-5 cm × 5-10 mm. Inflorescences 5-20 cm; bracts linear to linear-lanceolate, 15-30 × 2-5 mm, densely hispid and appressed pubescent. Pedicel 1-2.5 mm, elongated in fruit. Calyx 2-3 mm, to 5 mm in fruit, densely spreading hispid and minutely hispid outside, appressed pubescent above middle inside; lobes linear-lanceolate to ovate-lanceolate, apex acute. Corolla blue or purple, campanulate, 3.5-4 mm; throat appendages trapeziform, ca. 0.7 mm, 2-cleft at apex; limb ca. 5 mm wide; lobes orbicular, with conspicuous reticulate veins. Filaments inserted ca. 1 mm above base in corolla tube; anthers elliptic to ovoid, ca. 0.7 mm. Style ca. 1/2 as long as calyx; stigma capitate. Nutlets ellipsoid, 2-2.5 mm, densely tuberculate, aperture orbicular, margin thickened, entire. Fl. and fr. May-Jul.
* Roadsides, dry fields, forest margins in valleys; 800-2500 m. Gansu, Hebei, Heilongjiang, Jilin, Nei Mongol, Ningxia, Qinghai, Shaanxi, Shanxi.