- Scientific Name: Cynanchum stauntonii (Decaisne) Schlechter ex H. Léveillé
- Ref: Mem. Real. Acad. Ci. Barcelona. 12: 4. 1916.
- Chinese Common Name: 柳叶白前 liǔyè báiqián
- Family: Apocynaceae
- Genus: Cynanchum
- Distribution: Sunny places in moist woodland, water-logged lands; low to medium elevations. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hunan, Jiangsu, Jiangxi, Yunnan, Zhejiang
Herbs glabrous except for corolla and sometimes interpetiolar lines. Roots fascicled, slender. Stems erect, to 1 m. Leaves opposite; petiole ca. 5 mm; leaf blade narrowly lanceolate, 6-13 cm × 3-9(-17) mm, papery, acuminate at both ends; lateral veins ca. 6 pairs. Inflorescences slender, racemelike; peduncle up to 1.7 cm. Pedicel 3-9 mm. Sepals ovate-oblong, 1-1.5 × 0.4-0.5 mm; basal glands few. Corolla purple, less often greenish yellow, rotate; tube ca. 1.5 mm; lobes linear-oblong, 3-5(-8) × 0.6-1 mm, obtuse, interior minutely and conspicuously villous at base, sometimes throughout. Corona lobes 5, ovate, pouched, blunt, adaxially keeled, shorter than anthers and adnate to them at base. Anther appendages rounded, covering stigma head; pollinia oblong. Stigma head convex, included. Follicles linear-lanceolate in outline, 9-12 cm × 3-6 mm, smooth, glabrous. Seeds oblong; coma ca. 2.5 cm. Fl. May-Aug, fr. Sep-Dec. (Flora of China)