Petiole 2.6-13.5 cm, densely spreading puberulent; leaf blade orbicular-ovate to nearly orbicular, 2-4.8 X 2-4.5 cm, very densely puberulent, base rounded to cordate, margin crenulate to obtusely dentate, apex obtuse to rounded; lateral veins inconspicuous. Cymes lax, 7-20-flowered; peduncle 4-8 cm, densely spreading puberulent; bracts linear, 3-5 X 0.5-1 mm, margin entire. Pedicel 1.5-8 mm, spreading densely puberulent. Calyx segments narrowly lanceolate-linear, ca. 3.5 X 0.7 mm, outside puberulent, inside sparsely puberulent near apex. Corolla purplish, 7.5-9 mm, inside glabrous; tube 5-6 mm; limb 2-lipped; adaxial lip ca. 2.2 mm; abaxial lip ca. 3 mm. Stamens adnate to corolla 0.4-0.6 mm above base, glabrous; filaments linear, 2-2.3 mm; staminodes 2, 0.5-1 mm. Disc ringlike, ca. 0.3 mm, glabrous. Pistil 7-8.5 mm, puberulent. Style 5.5-7 mm; stigma linear, 1-1.5 mm, apex undivided, truncate. Capsule narrowly ellipsoid, ca. 4 X 1.6 mm. Fl. Apr-Jun, fr. Jun.

* Shady cliffs in limestone hills; ca. 300 m. N Guangxi (Yishan Xian).