Description from Flora of China
Petiole 2.5-5.5 cm, puberulent to pilose; leaf blade rhombic-ovate to nearly elliptic, 7.5-11 X 4.5-7 cm, puberulent to villous, base cuneate to broadly cuneate, margin dentate to crenate, apex acute to obtuse; lateral veins conspicuous. Cymes dense, 7-12-flowered; peduncle 8-14 cm, spreading puberulent; bracts narrowly lanceolate to elliptic, 5-7 X 1-1.2 mm, margin entire. Pedicel 0.2-2 mm, densely spreading puberulent. Calyx segments narrowly linear-lanceolate, ca. 4.5 X 0.7-0.8 mm, outside puberulent, inside sparsely puberulent. Corolla yellowish, ca. 7.2 mm, inside sparsely puberulent below abaxial lip; tube ca. 5 X 3 mm; limb distinctly 2-lipped; adaxial lip ca. 0.8 mm; abaxial lip ca. 2.2 mm. Stamens adnate to corolla ca. 2 mm above base, glabrous; filaments linear, ca. 3 mm; staminodes 2, ca. 1 mm. Disc ringlike, ca. 0.5 mm, glabrous. Pistil ca. 5 mm, puberulent. Style ca. 2.8 mm; stigma obtrapeziform, ca. 0.3 mm, 2-lobed. Fruit and seeds unknown. Fl. Jun.
* Rocks by rivers in montane regions; ca. 300 m. NW Guangdong (Yangshan Xian).