Stems to 60 cm, villous. Petiole 1-10.5 cm; leaf blade ovate to broadly ovate, 3.5-10 X 2-6.5 cm, adaxially sparsely villous, abaxially densely puberulent, villous along veins, margin dentate-serrate, apex acuminate. Peduncle ca. 2.5 cm, densely pubescent; bracts 4-7 mm. Pedicel to 1.5 cm. Calyx segments spreading, lanceolate to narrowly ovate, 6-8 X ca. 3 mm, outside puberulent. Corolla blue-purple, ca. 1.4 cm, inside central lobe of abaxial lip densely bluish bearded; tube ca. 8 mm; adaxial lip ca. 6 mm, lobes ca. 1 mm; abaxial lip ca. 6 mm, lobes triangular, ca. 1.5 mm. Stamens ca. 3.5 mm; filaments forked apically, glandular puberulent near apex; 1 branch with fertile anther, other with a thick yellow knob; staminodes 3, ca. 2.5 mm. Ovary ovoid-conical, ca. 3 mm, densely villous to pilose. Style ca. 7 mm, pubescent. Capsule ca. 2 cm. Fl. and fr. Sep.

* Limestone; ca. 1000 m. S Yunnan (Mengla Xian).