Description from Flora of China
Onosma sinicum Diels var. farreri (I. M. Johnston) W. T. Wang & Y. L. Liu.
Subshrubs grayish. Stems simple or with few branches at apex, 20-30 cm tall, slender, spreading bristly and short strigose, hairs discoid at base. Leaf blade oblanceolate, 1.5-3 cm × 2-4 mm, abaxially densely strigose, adaxially spreading hispid and densely strigose, tubercles discoid at base. Cymes ca. 4 × 1-2 cm in fruit. Pedicel to 6 mm. Calyx ca. 6 mm at anthesis; lobes 0.5-1 mm. Corolla blue, 1.1-1.2 cm, 2-2.5 mm wide at base, to 3-5 mm wide toward lobes, folded below sinuses above middle, antrorsely strigose, minutely puberulent outside, glabrous inside except for a few hairs on nectary. Filaments not decurrent, inserted ca. 3 mm from base, gradually tapering toward anthers; anthers ca. 8 mm, united into a tube, sterile apex ca. 1 mm, located 1-2 mm below sinuses of corolla. Nutlets unknown. Fl. Apr.
* Dry hillsides, open sandy areas. Gansu, Shaanxi (Taibai Shan).