鹅绒藤 e rong teng

Cynanchum deltoideum Hance; C. pubescens Bunge; Vincetoxicum pubescens (Bunge) Kuntze.

Plants twining to 4 m, pubescent throughout. Leaves opposite; petiole 1-4 cm; leaf blade broadly triangular-cordate, 2.5-9 × 2-7 cm, thin papery, glaucous abaxially, base cordate, apex acute; basal veins up to 9, lateral veins up to 6 pairs, slightly elevated abaxially. Inflorescences normally forked at first flower, sometimes rebranching, to ca. 20-flowered; peduncle to 6 cm; rachis to 10 cm, often branched, zigzag in fruit. Pedicel ca. 1 cm. Sepals oblong-triangular, 1-2 × 0.5-1 mm, ciliate, pubescent. Corolla white, rotate to reflexed, glabrous; tube 0.5-1 mm; lobes oblong-lanceolate, 3-6 × 1-1.2 mm. Corona tube cupular, ca. 1 mm, as long as gynostegium, margin with 5 threadlike lobes as long as corolla lobes alternating with 5 short rounded lobes, interior with 5 shorter, threadlike appendages. Anthers subrhomboid, appendages rounded; pollinia oblong. Stigma head convex. Follicles cylindric-fusiform, 8-13 cm × 5-8 mm, apex acuminate. Seeds oblong, 5-6 × ca. 2 mm; coma 2.5-3 cm. Fl. Jun-Aug, fr. Aug-Oct.

Thickets, roadsides, river banks; 0-500(-900) m. Gansu, Hebei, Henan, Jiangsu, Jilin, Liaoning, Ningxia, Qinghai, Shaanxi, Shandong, Shanxi [Korea, Mongolia]

A decoction of all parts is used for the treatment of colds and chills.