Lianas to 5 m, pubescent except for leaves and corolla. Petiole 5-10 mm; leaf blade papery, obovate or elliptic, 5-7 × 1.5-3 cm, base rounded, apex obtuse or short acuminate; lateral veins 4 or 5 pairs, obliquely ascending. Cymes extra-axillary, umbel-like, 12-16-flowered; peduncle 3-4 cm; rachis simple; bracteoles subtending pedicels many, linear or spatulate, 1-1.3 cm × 1-3 mm. Pedicel ca. 5 mm. Buds ca. 7 mm, long acute. Sepals linear, 4-7 mm. Corolla glabrous; lobes longer than tube, very narrow, open flower not seen. Corona lobes elliptic, adnate to base of gynostegium. Anther appendages oblong, longer than stigma head, pollinia oblong, erect. Ovaries oblong-ovate, glabrous; stigma head conical, apex 2-cleft. Fl. Apr.

* Forests; ca. 600 m. Guizhou (Libo).