Onosma waltonii Duthie

Herbs perennial, ca. 15 cm tall. Stems woody, branched, usually spreading, sparsely hispid, short strigose. Leaf blade oblong-lanceolate, 1-2.5 cm × 4-6 mm, abaxially light green, densely pubescent and sparsely hispid, adaxially green, densely hispid and short strigose, hairs discoid at base, base rounded, slightly clasping. Inflorescences solitary, terminal, not branched, 1-2 cm wide at anthesis. Pedicel slender, ca. 3 mm. Calyx 6-7 mm; lobes lanceolate, hispid outside, densely white villous inside. Corolla blue, 1-1.3 cm, base ca. 2 mm wide, gradually expanded upward; throat 5-7 mm wide, obscurely pubescent outside; nectary ca. 0.2 mm, glabrescent; lobes erect, triangular, ca. 1.5 × 2 mm, margin revolute. Filaments slender, 3-3.5 mm, inserted 4-4.5 mm above base of corolla tube, decurrent part linear, 2.3-3 mm, minutely pubescent, appearing mealy; anthers laterally united, included or slightly exserted; apex sterile, ca. 0.5 mm. Style 1.2-1.4 cm, glabrous. Nutlets light yellow, ca. 2.5 mm, shiny, obscurely tuberculate, wrinkled. Fl. and fr. Aug.

Xizang (Jiangzi Xian).

* Arid hillsides; ca. 3700 m.

Onosma waltonii là loài thực vật có hoa trong họ Mồ hôi. Loài này được Duthie mô tả khoa học đầu tiên năm 1912.

西藏滇紫草（学名：Onosma waltonii）是紫草科滇紫草属的植物，是中国的特有植物。分布于中国大陆的西藏等地，生长于海拔3,800米的地区，见于干燥山坡，目前尚未由人工引种栽培。