Lianas with densely pubescent internodes along 1 side. Petiole to 7 mm; leaf blade lanceolate, ca. 5 × 1.8 cm, gla-brous, base rounded, apex acute; lateral veins 5-7 pairs, adaxially slightly raised and minutely puberulent. Inflorescences lax; cymules umbel-like, glabrous, up to 3 along zigzag rachis to 1.7 cm; peduncle to 2.5 cm, glabrous. Pedicel ca. 1 cm, very slender. Sepals ovate, ca. 1 × 0.5 mm, glabrous. Corolla tube bowl-shaped, ca. 1 mm, much shorter than lobes; lobes triangular-acuminate, ca. 2.5 mm, very minutely puberulent, apex twisted. Corona lobes rounded, to base of anthers.

* Yunnan (Ouei cha).