Onosma mertensioides I. M. Johnst.

Herbs perennial, gray, 15-30 cm tall, hispid, reflexed-pilose. Stems single, erect, not branched. Basal leaves oblanceolate, 5-11 × 0.5-1.5 cm, abaxially densely appressed pubescent, adaxially appressed hispid, hairs discoid at base, base cuneate, apex acuminate; stem leaves oblong-lanceolate, 3-6 cm × 5-7 mm, base rounded or broadly cuneate, apex obtuse. Inflorescences terminal, solitary or dichotomously branched, racemose, 10-12 cm; bracts ovate-lanceolate, 3-7 mm, hispid, appressed pubescent. Pedicel 5-6 mm, elongated in fruit, stout, densely yellow hispid, white appressed pubescent. Calyx 7-8 mm, elongated in fruit, yellow hispid, parted nearly to base; lobes linear-lanceolate. Corolla blue-purple, changing to red late in season, tubular-campanulate, 1.2-1.6 cm, base ca. 2 mm wide, gradually expanded upward; throat 5-6 mm wide, densely short appressed pubescent outside, obscurely pubescent inside along veins; nectary ringlike, ca. 0.5 mm, lobed, pubescent; lobes triangular, ca. 1.5 mm, margin revolute. Filaments subulate, 4-5 mm, inserted ca. 5 mm above base of corolla tube; anthers united at base, 6-7 mm, included; apex sterile, ca. 1 mm. Nutlets gray, ca. 3 mm, shiny, sparsely papillate. Fl. and fr. Jul.

SW and W Sichuan.

* Meadows; 3900-4000 m.

Onosma mertensioides là loài thực vật có hoa trong họ Mồ hôi. Loài này được I.M. Johnst. mô tả khoa học đầu tiên năm 1951.

川西滇紫草（学名：Onosma mertensioides）为紫草科滇紫草属的植物，为中国的特有植物。分布在中国大陆的四川等地，生长于海拔3,900米至4,000米的地区，多生长在山坡草地及潮湿水沟边，目前尚未由人工引种栽培。