Subshrubs. Stems 15-30 cm, apically appressed puberulent. Petiole 3-11 mm; leaf blade narrowly oblong to lanceolate, 2.2-5.7 X 0.8-1.5 cm, leathery, adaxially glabrous, abaxially glabrous, midrib sometimes puberulent, base cuneate to subrounded, margin repand-denticulate to serrate, apex acuminate to acute; lateral veins 4-6 on each side of midrib, flat. Cymes 1-6-flowered; peduncle 3-4.5 cm, sparsely puberulent to glabrescent; bracts linear-oblong, 2-3 X 0.2-0.5 mm. Pedicel ca. 6 mm. Calyx 5-sect from base; segments ca. 7 mm, glabrous. Corolla white, purplish striate, ca. 2.8 cm, outside glabrous, inside glandular puberulent below abaxial lip; tube subtubular, ca. 1.5 cm X 5 mm; adaxial lip ca. 3 mm; abaxial lip ca. 1.2 cm. Stamens ca. 4 mm; filaments ca. 3 mm; anthers oblate; connective unappendaged; staminodes 2, ca. 0.6 mm. Disc ringlike, margin entire. Pistil ca. 1.1 cm, glabrous. Capsule 6-10 cm. Seeds unknown. Fl. Jul-Aug, fr. Aug.

On trees in evergreen, broad-leaved forests; 2100-2400 m. W Yunnan [N Myanmar].