5. Onosma zayuense Y. L. Liu, Acta Phytotax. Sin. 18: 65. 1980.
察隅滇紫草 cha yu dian zi cao
Herbs perennial, green, ca. 35 cm tall, spreading hispid, pubescent. Stems slender, branched from middle. Basal leaves linear-lanceolate, 10-15 × 1-2 cm, abaxially densely pilose and sparsely appressed pubescent, adaxially hispid and short appressed pubescent, hairs discoid at base, base attenuate, apex obtuse; stem leaves sessile, oblong or lanceolate, 2.5-3 cm × 5-9 mm. Inflorescences terminal, not branched, racemose after anthesis, 5-7 cm; bracts linear-lanceolate, ca. 12 × 2 mm. Pedicel slender, 1-1.5 cm, slightly elongated in fruit, spreading yellow hispid. Calyx parted to base; lobes linear-lanceolate, 1-1.2 cm × ca. 1 mm, hirsute. Corolla tubular-campanulate, 1.4-1.5 cm, base 1.5-2 mm wide; throat ca. 5 mm wide, pubescent outside above middle, glabrous inside except for nectaries; nectary pubescent; lobes triangular, ca. 1.5 × 1 mm, margin revolute. Filaments ca. 4 mm, inserted 4-5 mm above base in corolla tube, decurrent part thickened, linear, ca. 3 mm; anthers united at base, ca. 7.5 mm, slightly exserted; apex sterile, ca. 2.5 mm. Style 1.5-1.7 cm, glabrous. Nutlets light yellow-white, ca. 3.5 mm, shiny. Fl. and fr. Aug.
* River banks; ca. 3300 m. SE Xizang.