Petiole 5.5-16.5 cm, densely puberulent; leaf blade ovate to reniform, 4-8.5 X 3-9 cm, puberulent, base cordate, margin repand-crenate to obtusely dentate, apex acute to rounded; lateral veins conspicuous. Cymes lax, 8-18-flowered; peduncle ca. 5 cm, densely puberulent; bracts linear, 2-3 X ca. 0.3 mm, margin entire. Pedicel 0.4-1.8 cm, densely puberulent. Calyx segments triangular, 3.5-4 X 0.8-1 mm, outside puberulent, inside glabrous. Corolla white, ca. 1.4 cm, inside puberulent along 2 longitudinal lines below abaxial lip; tube ca. 11 X 5 mm; limb indistinctly 2-lipped; adaxial lip ca. 3 mm; abaxial lip ca. 3.5 mm. Stamens adnate to corolla ca. 3 mm above base, sparsely puberulent; filaments linear, ca. 3.5 mm; staminodes 2, 2.8-3 mm. Disc ringlike, ca. 0.8 mm, glabrous. Pistil ca. 1 cm; ovary densely brownish puberulent. Style ca. 6.5 mm, puberulent near base; stigma obtrapeziform, ca. 0.6 mm, 2-lobed. Fruit and seeds unknown. Fl. Apr.

* Cliffs in limestone hills. C Guangxi (Liujiang Xian).