1. Onosma hookeri C. B. Clarke in J. D. Hooker, Fl. Brit. India. 4: 178. 1883.
细花滇紫草 xi hua dian zi cao
Herbs perennial, 20-30 cm tall, hispid, strigose, hairs discoid at base. Stems single to several, cespitose, not branched. Basal leaves oblanceolate, 5-15 × 0.5-1.5 cm, abaxially densely short strigose, adaxially hispid; stem leaves sessile, lanceolate to narrowly lanceolate, 3-8 cm × 4-10 mm, base obtuse to rounded, apex acute. Inflorescences usually solitary, terminal, 3-5 cm wide at anthesis, many flowered; bracts narrowly lanceolate. Pedicel 2-4 mm, densely hispid. Flowers crowded. Calyx lobes subulate, 1-1.5 cm, hispid, strigose. Corolla blue, purple, or light purple-red, tubular-campanulate, 1.7-3.3 cm; throat 7-8 mm wide, base 2-3 mm wide, strigose above middle and pubescent outside, glabrous inside; lobes broadly triangular, ca. 1.5 × 3 mm, margin revolute. Filaments linear, 5-6 mm, inserted at middle to ca. 2/3 from base of corolla tube; anthers united at base, 7-8 mm, sterile apex ca. 1 mm. Style exserted, 2.2-2.8 cm, glabrous. Nutlets unknown. Fl. Jun-Jul.
Hillsides, meadows, thickets; 3000-4700 m. Xizang [Bhutan, India, Nepal]