大花藤 da hua teng

Asclepias pulchella Roxburgh, Fl. Ind. 2: 54. 1824.

Stems to 8 m, terete, glabrous. Petiole 4-12 cm, with apical adaxial gland cluster; leaf blade ovate, 6-20 × 4-15 cm, sparsely appressed pubescent to glabrous, base deeply cordate, apex acute-acuminate; lateral veins 6 or 7 pairs. Peduncle 3.7-13 cm. Pedicel 1.2-4 cm. Sepals ovate-oblong, 3-4 mm, ciliate. Corolla yellowish white; tube 1.2-1.8 cm, limb 3-4 cm in diam.; lobes shorter than tube, oblong, glabrous. Corona lobes white, 1-1.2 cm. Ovaries glabrous. Follicles ca. 16 × 4 cm. Seeds ovate; coma to 4 cm. Fl. Jun-Aug, fr. Sep-Dec.

Open woods, forests, bushland; 400-1200 m. SW Guangxi, S Yunnan [India, Laos, Malaysia, Myanmar, Nepal, Sikkim, Thailand].