空心柴胡 kong xin chai hu

Bupleurum candollei Franchet (1894), not Wallich ex de Candolle (1830).

Stems usually several, rarely solitary, younger parts often purplish-tinged. Basal leaves narrowly oblong-lanceolate, 10–19 × 0.7–1.5 cm. Middle leaves lanceolate, base slightly narrow and clasping. Bracts 1–2, deciduous, umbellules 8–15-flowered. Petals yellow.

Forests, grassy places on mountain slopes; 1000–4000 m. S Gansu, W Hubei, Ningxia, S Shaanxi, NE and W Sichuan, NW Yunnan.