Description from Flora of China
Shrubs scandent, glabrous. Branchlets red-brown, smooth. Stipules ovate-triangular, ca. 2 mm, caducous; petiole remarkably long, 1.2-2.7 cm, glabrous; leaf blade abaxially grayish white, adaxially green, oblong or ovate-oblong, 4.5-6.5 × 2.5-4 cm, papery, lateral veins 10-12 pairs, slightly prominent on both surfaces, base rounded, apex shortly acuminate, rarely acute. Inflorescences to 6 cm, glabrous. Flowers white, 3-3.5 mm in diam., usually 3-12-fascicled in terminal or axillary, cymose racemes; peduncles 5-10 mm, rarely to 1.5 cm. Pedicel 4-6 mm. Sepals ovate-triangular, ca. 2 mm, apex slightly obtuse. Petals spatulate, apex obtuse. Stamens longer than petals. Fruit not seen. Fl. summer, fr. unknown.
This species is characterized by its long petioles and up to 1.5 cm long peduncles.
● Forests; middle elevations. SE Yunnan (Xichou).