Petiole 3-7 cm, spreading pubescent to pilose; leaf blade ovate to broadly so, 3-4 X 2.2-3.6 cm, pubescent and pilose, base cordate to rounded, margin remotely denticulate to entire, apex acute to obtuse; lateral veins inconspicuous. Cymes dense or lax, 9- to many flowered; peduncle 8-9 cm, spreading pubescent to pilose; bracts linear to lanceolate, 5.5-7 X 1.8-2 mm, margin entire. Pedicel 1.5-3.5 mm, brownish pubescent. Calyx segments lanceolate-linear, 4.5-5 X 0.6-1 mm, puberulent to pilose. Corolla white, ca. 1 cm, inside puberulent along longitudinal lines on abaxial lip; tube ca. 8 X 4 mm; limb indistinctly 2-lipped; adaxial lip ca. 1.2 mm; abaxial lip ca. 2 mm. Stamens adnate to corolla 1-1.5 mm above base, puberulent; filaments subulate, 3.5-4 mm; staminodes absent. Disc ringlike, ca. 0.6 mm, glabrous. Pistil ca. 8.5 mm, puberulent. Style ca. 5.7 mm; stigma obtrapeziform, ca. 0.9 mm, 2-lobed. Fruit and seeds unknown. Fl. Jun-Sep.

* Caves in limestone hills; ca. 100 m. S Guangdong (Yangchun Xian, Zhaoqing Xian).