勐腊藤 meng la teng

Plants to 4 m. Stems warty; branches and branchlets puberulent to glabrous. Petiole ca. 2 cm; leaf blade elliptic or elliptic-oblong, 6-9 × 2.5-4 cm, thin papery, glabrous, trans-lucent dotted, base nearly rounded, apex acuminate; lateral veins 12-15 pairs. Inflorescences extra-axillary, longer than leaves, lax, many flowered; peduncle to 10 cm, rusty pubescent. Sepals broadly ovate, ca. 1.5 × 1.5 mm. Corolla yellow; tube without scales; lobes oblong, ca. 5 × 2 mm, glabrous outside, densely hirsute inside. Corona fleshy; lobes rounded, revolute, as long as stamens. Ovaries glabrous. Stigma head fusiform. Fl. Oct.

Montane forests; ca. 200 m. S Yunnan.