Corallodiscus forrestii (Anthony) B. L. Burtt; Didissandra forrestii J. Anthony.

Petiole to 5 mm, adaxially glabrescent, abaxially white to grayish pubescent; leaf blade obovate to rhombic-ovate, elliptic, or suborbicular, 6-12 X 3-8 mm, flat to plicate, adaxially glabrescent, abaxially densely white to grayish woolly, margin subentire to crenate, apex acute to rounded; basal venation palmate, veins 3-7; lateral veins to 4 on each side of midrib, adaxially impressed, abaxially prominent. Cymes 1-flowered; peduncle 1-6 cm, densely grayish pubescent to glabrescent. Calyx 2-5 mm, outside grayish woolly. Corolla purple-blue to pale or deep blue, 6.5-12 mm, outside sparsely puberulent; tube 5-9 X 1-3.2 mm; adaxial lip lobes 1-2 mm; abaxial lip lobes 1.5-3 mm. Adaxial stamens ca. 2 mm, abaxial ones 4-5 mm; staminode 0.4-1 mm. Pistil glabrous; ovary ca. 3 mm. Style 3-4 mm. Capsule ovoid, 6-7 mm. Fl. Jun-Sep, fr. Jul-Sep.

* Crevices of rocks or near roads in montane regions; 2100-3300 m. S Gansu, W Sichuan, SE Xizang (Zayü Xian), NW Yunnan.