镇江白前 zhen jiang bai qian

Tylophora sublanceolata Miquel, Ann. Mus. Bot. Lugduno-Batavum 2: 128. 1866; Vincetoxicum sublanceolatum (Miquel) Maximowicz.

Stems twining, to 1.5 m, pubescent along 2 lines, glarescent. Leaves opposite; petiole ca. 5 mm; leaf blade lanceolate or narrowly oblong, 3-5 × 2-2.8 cm, base rounded, apex short acuminate, glabrescent or puberulent along veins. Inflorescences umbel-like, ca. 1.5 cm. Sepals lanceolate, ca. 2.5 × 1 mm, glabrescent. Corolla purple, rotate; lobes lanceolate, ca. 3.5 × 1 mm, glabrous. Corona shorter than anthers; lobes ovate, fleshy. Pollinia oblong. Follicles lanceolate in outline, ca. 7 cm × 7 mm, glabrous. Seeds ovate, ca. 3 × 2 mm; coma ca. 2 cm. Fl. Mar-Aug, fr. Sep-Dec.

* Thickets, open woodland. Jiangsu (Zhenjiang) [Japan].