Tylophora leptantha Tsiang

Lianas to 4 cm, glabrous except for corolla. Petiole 1-2.5 cm; leaf blade oblong-lanceolate, 6-16 × 2.5-5 cm, papery, base rounded to shallowly cordate, apex acute or short acuminate; lateral veins ca. 6 pairs. Inflorescences to 12 × 12 cm, many flowered; peduncle purplish; rachis many forked, slightly zigzag, slender; cymules umbel-like or reduced to solitary flowers. Pedicel 2-8 mm; purplish. Sepals oblong, ca. 1 × 0.5 mm; glands absent. Corolla greenish, rotate, glabrous outside, pilose inside; lobes oblong, ca. 3 × 2 mm. Corona lobes ovate, pouched, apex reaching base of anthers. Anthers square, appendages rounded; pollinia ovoid, horizontal. Ovaries glabrous. Stigma head as long as anthers, nearly flattened. Follicles oblong-lanceolate, ca. 12 cm × 5 mm. Seeds ovate, ca. 7 × 3 mm; coma ca. 3 cm. Fl. Apr-Sep, fr. Aug-Dec.

* Open woods, moist bushland. Guangdong, Guangxi, Hainan.