Herbs. Stems 0.5-7 cm, densely hirsute and woolly. Petiole 1-4.5 cm, densely villous; leaf blade broadly elliptic or ovate to obovate, 3.5-10 X 2.8-5.5 cm, adaxially villous, abaxially villous and puberulent, densely villous along veins, base cuneate to rounded, margin serrulate to serrate, apex acute to obtuse; lateral veins 7-9 on each side of midrib. Cymes 5-15-flowered; peduncle 3.5-7.5 cm, densely villous; bracts 2, linear to narrowly triangular or obovate-oblong, 4-6 mm. Pedicel 1-2 cm. Calyx segments lanceolate to linear, 2-6 X ca. 1 mm, outside villous, margin sparsely dentate to entire. Corolla bluish, ca. 4.5 mm, outside puberulent; tube not swollen, 1-1.5 mm; lobes suborbicular, ca. 3.2 X 3 mm. Filaments ca. 1 mm, glabrous; anthers dehiscing poricidally; staminode ca. 0.5 mm. Disc ringlike. Ovary ovoid, 2-2.3 mm, sparsely puberulent to glabrescent. Style unappendaged, 2.2-4.2 mm, glabrous. Capsule 1.8-2.2 cm. Fl. May-Jul, fr. Jul.

Shady and damp forests; 200-900 m. SE Guangxi [N Vietnam].