Description from Flora of China
Herbs perennial, rhizomatous, stoloniferous. Stems erect, 50-100 cm tall, rooting at basal nodes. Petiole to 1.7 cm at mid stem; leaf blade ovate, 2.5-5 × 1.5-3.6 cm, largest at mid stem, papery, sparsely and finely white pilose adaxially and along veins abaxially, base truncate and decurrent, apex acuminate. Racemes terminal and axillary, 3.5-9 cm, few flowered, axillary racemes with a basal pair of leaves; rachis densely puberulent; bracts mostly sessile, ovate, sparsely white puberulent, 4-7 mm, short petiolate basally. Pedicel ca. 3 mm, densely glandular puberulent. Calyx ca. 2.5 mm, ca. 4 mm in fruit, glandular puberulent outside, margin pilose; scutellum well developed, ca. 2.2 mm, erect, obovate, to 5 mm in fruit. Corolla yellow to purple red, 2.2-2.5 cm, glandular pubescent outside, glabrous inside, base slightly bent; upper lip semicircular, ca. 2.8 mm wide; middle lobe of lower lip triangular-ovate, base ca. 4.5 mm wide, apex emarginate; lateral lobes ovate, ca. 2 mm wide. Nutlets unknown. Fl. Jun-Jul, fr. Jul-Aug.
* Subtropical, evergreen broad-leaved forests; 1500-3000 m. Guizhou, Hubei, Sichuan