Description from Flora of China
Stems 20-40 cm, erect, brownish pubescent and glandular, glabrescent. Normal leaves sessile or with petiole to 10 mm; leaf blade green or greenish, sometimes oblique, oblong to ovate-oblong, 4-13 X 2-5 cm, adaxially sparsely pubescent, abaxially pubescent along veins, base strongly oblique, cuneate on narrow side, cuneate to cordate on other, margin repand-serrulate and glandular, apex acuminate; reduced leaves sessile, broadly ovate to ovate, 0.8-2.5 cm. Cymes pseudoterminal; peduncle 2-5 cm, pubescent and glandular. Calyx ca. 4.5 mm, 5-lobed; tube ca. 1.5 mm; lobes broadly ovate to ovate-triangular, ca. 3 X 2.5-3 mm, outside puberulent. Corolla pink, 1.8-2.1 cm, outside glabrous, inside with 2 longitudinal series of yellowish green clavate hairs below mouth and between abaxial lip lobes; tube funnelform-tubular, ca. 1.4 cm X 4 mm; adaxial lip ca. 3 mm; abaxial lip ca. 6 mm. Adaxial filaments ca. 4 mm, abaxial ones ca. 6.5 mm, puberulent near apex; anthers ca. 1.2 mm wide; staminode linear, ca. 1.5 mm. Pistil ca. 9 mm, glabrous. Style ca. 6 mm; stigma 1, elliptic. Capsule 5-6 mm in diam. Fl. Jul-Dec, fr. Dec-Jan.
* Shaded areas in stream valleys; ca. 1300 m. SE Yunnan (Hekou Xian).