徐长卿 xu chang qing

Asclepias paniculata Bunge, Enum. Pl. China Bor. 43. 1833; Cynanchum dubium Kitagawa; Pycnostelma chinense Bunge ex Decaisne; P. leucanthum Kitagawa; P. paniculatum (Bunge) K. Schumann; Vincetoxicum paniculatum (Bunge) C. Y. Wu & D. Z. Li; V. pycnostachys Kitagawa.

Roots densely fibrous, fragrant. Stems slender, erect, to 1 m, glabrous or hispid below, rigid, unbranched or with few branches from upper parts. Leaves opposite; petiole ca. 3 mm; leaf blade lanceolate to linear, 5-13 × 0.5-1.5 cm, stiffly papery, glabrous or adaxially puberulent, ciliate, base and apex acute; lateral veins obscure. Inflorescences terminal and from upper nodes, laxly branched, to 7 cm; peduncle 2.5-4 cm. Pedicel 5-10 mm. Sepals lanceolate, 1-1.5 × ca. 0.5 mm; glands present or absent. Corolla yellow-green, subrotate, glabrous; tube short; lobes ovate, 4-5.5 × 1.5-3 mm. Corona deeply 5-lobed; lobes ovate-oblong, fleshy, slightly laterally compressed, apex obtuse, as long as anthers, adaxially keeled up to middle and adnate to anthers. Anther appendages semiorbicular, slightly shorter than stigma head; pollinia oblong. Stigma head subumbonate. Follicles lanceolate in outline, 4-8 cm × 3-8 mm. Seeds oblong, ca. 5 × 3 mm; coma 1.5-3 cm. Fl. May-Jul, fr. Aug-Dec. 2n = 22*.

Sunny mountain slopes. Anhui, Fujian, Gansu, Guangdong, Guangxi, Guizhou, Hebei, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Liaoning, Nei Mongol, Shaanxi, Shandong, Shanxi, Sichuan, Taiwan, Yunnan, Zhejiang [Japan, Korea, Mongolia]

All parts are used as medicine for the treatment of stomachache, enteritis, infantile malnutrition due to intestinal parasites, toothache, traumatic injury, and snake bites.