Cynanchum henryi Warburg ex Schlechter & Diels in Diels, Bot. Jahrb. Syst. 29: 542. 1900.

Lianas to 2 m. Stems slender, glabrous or sparsely puberulent when young. Petiole ca. 3 mm; leaf blade lanceolate, 3-5.2 × 0.5-1.2(-2) cm, thin papery, glabrescent; lateral veins obscure, 2 lower veins visible in younger leaves, at acute an-gle to midrib. Cymules usually solitary, umbel-like; peduncle slender, 0.5-1.5(-3) cm, glabrescent. Pedicel 2-5 mm. Se-pals lanceolate, ca. 1.2 × 0.6 mm, pubescent, basal glands 5. Corolla glabrous outside, puberulent inside; tube bowl-shaped, ca. 1.2 mm; lobes ovate-triangular, ca. 1.7 × 2 mm, patent. Corona ringlike, 5-toothed; teeth triangular, acute. Anther appendages orbicular; pollinia oblong, caudicles in-flexed ascending. Ovaries glabrous. Follicles narrowly lan-ceolate, 5-6 cm × 3-4 mm. Seeds oblong; coma to 2 cm. Fl. Apr-Jul, fr. Jul-Oct.

Cheng & Feng (Bull. Bot. Lab. North-East. For. Inst. 8(8): 2. 1980) described material from Anhui and Zhejiang as var. longipedunculata, but the name is invalid because the authors failed to designate a type.

* Open woods, thickets; ca. 1200 m. Anhui, Fujian, Jiangxi, Sichuan, Zhejiang.