Stems 20-40 cm, brown villous. Petiole 0.3-7 cm; leaf blade green on both surfaces, slightly oblique, ovate, 5-25.5 X 2.5-17 cm, appressed puberulent, base oblique, rounded to subcordate, margin repand-crenulate, apex abruptly acuminate. Cymes 3-12-flowered; peduncle 7.5-12.5 cm, brown glandular pubescent; involucre early deciduous. Calyx segments lanceolate-linear, 9-10 X 1.5-2 mm. Corolla white, suffused yellow-green, ca. 3.6 cm, outside sparsely pubescent near apex; tube ca. 2.7 cm; adaxial lip ca. 2.8 mm; abaxial lip ca. 1 cm. Stamens ca. 1.7 cm; staminodes 3, central 1 ca. 1.5 mm, lateral 2 9-10 mm. Pistil ca. 2.5 cm; ovary ca. 8 mm, sparsely puberulent. Style puberulent basally. Capsule ca. 1.5 cm. Fl. and fr. Oct.

* Forests on limestone hills; ca. 1100 m. SW Guangxi (Napo Xian).