Description from Flora of China
Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 2-5 cm X 3-8 mm; leaf blade ovate to elliptic, 6-9.6 X 4-6.5 cm, herbaceous, densely puberulent, eglandular, base sometimes oblique, cuneate to nearly rounded on 1 side and cuneate on other, margin crenate to serrate or dentate, apex acute to rounded; lateral veins 5-7 on each side of midrib, conspicuous. Cymes 3-7-flowered; peduncle 8.5-15 cm, puberulent; bracts 2, free, linear, 3-4 X 0.6-0.8 mm, puberulent, margin entire, apex obtuse. Pedicel 0.3-3 cm, puberulent. Calyx 5-sect from base; segments equal, lanceolate-linear, ca. 4.5 X 1 mm, outside puberulent, inside apically sparsely puberulent, margin entire, apex obtuse. Corolla purple, ca. 1.7 cm, outside puberulent, inside glabrous; tube nearly tubular, ca. 1.2 X 0.6 cm; adaxial lip ca. 3 mm; abaxial lip ca. 6 mm. Filaments ca. 8.5 mm, sparsely puberulent; anthers fused by entire adaxial surfaces, ca. 3 mm, glabrous; staminodes 2, ca. 1.5 mm. Pistil ca. 1 cm, puberulent; ovary ca. 5.5 mm. Stigma ligulate-oblong, ca. 1.5 mm, undivided. Capsule erect, ca. 2.8 cm. Fl. Jun.
* Rocks in limestone hills. NW Guangxi (Lingyun Xian).