Herbs perennial, ± twining; axial parts ± densely hirsute. Stems prostrate, tips twining. Petioles 3-8 mm; leaf blade oblong-elliptic to ovate-lanceolate, 1.8-5 X 0.8-2.5 cm, sparsely hirsute, more densely so along veins, ciliate, base rounded, shallowly cordate or broadly cuneate, margin entire, apex rounded to acute, mucronulate. Inflorescences usually 1(-3)-flowered; peduncle ca. 5 mm; bracts ovate. Sepals lanceolate, subequal, 1-1.5 cm, ± hirsute to glabrous abaxially, apex acuminate. Corolla pale yellow, funnelform, ca. 3 cm, glabrous; limb shallowly 5-lobed. Stamens included, unequal; filaments fimbriate-scaly basally; anthers twisted. Ovary glabrous. Capsule ovoid or globose, ca. 1 cm. Seeds trigonous-ovoid, glabrous. Fl. Sep-Oct, fr. Oct-Dec.

* Hillside thickets; ca. 100 m. Guangxi (Yongning Xian).