Didymocarpus silvarum W. W. Sm.

Stems 7-15 cm, densely appressed pubescent. Leaves opposite; petiole 1.5-6.5 cm; leaf blade elliptic to ovate or obovate, 1.5-20 X 1-10.5 cm, herbaceous, adaxially puberulent, eglandular, abaxially puberulent along veins, glandular, base oblique, rounded to cordate, margin dentate to serrate, apex acute to rounded; lateral veins 8-10 on each side of midrib. Cymes to 20-flowered; peduncle 5-7 cm, glabrous; bracts free, orbicular-ovate, ca. 2 mm, glabrous, adaxially glandular, margin entire. Pedicel 5-12 mm. Calyx actinomorphic, 2-3 mm; limb 5-lobed; tube ca. 1.5 mm; segments equal, lobes broadly ovate, ca. 1.5 X 1 mm, glabrous, adaxially glandular, margin entire. Corolla purple to pink, 1.8-2 cm, glabrous; tube cylindric, ca. 1.4 cm X 2-3 mm; adaxial lip ca. 3 mm; abaxial lip ca. 6 mm. Stamens glabrous; filaments ca. 3.5 mm; anthers ca. 1.5 mm; staminodes absent. Pistil ca. 1.2 cm; ovary ca. 9 mm, appressed puberulent. Style glabrous. Immature capsule ca. 2 cm.

S Yunnan (Simao Xian).

* Forests of montane regions; 1200-1300 m.