Strophanthus sarmentosus DC.

Shrubs stolon bearing, to 4 m tall, deciduous, latex clear or white. Branches densely lenticellate, branchlets dark or reddish brown. Petiole 0.2-2.1 cm; leaf blade elliptic or ovate, 2-15 X 1.5-7 cm, papery or thinly leathery, apex acuminate, acumen 0.2-2 cm; lateral veins 3-6 pairs, glabrous. Pedicel to 1.2 cm, puberulent. Sepals ovate or elliptic, 0.5-2 cm, puberulent. Corolla yellow-white outside, purple-yellow inside; tube 1.7-4 cm, glabrous outside; lobes including tail to 13.5 cm, pendulous. Anthers included. Ovary puberulent. Follicles 10-28 X 2.2-4.4 cm, apex obtuse. Seeds 0.8-2 cm, beak to 8 cm, coma 2.5-10.5 cm. Fl. Dec-May. 2n = 18.

S Yunnan [native to WC Africa]