Petrocosmea sinensis Oliver

Petiole 0.5-3.5(-4.5) cm, puberulent to spreading pilose; leaf blade broadly rhombic to broadly rhombic-obovate or nearly orbicular, 0.9-2.5 X 0.7-1.8 cm, puberulent to densely pilose, base broadly cuneate or rounded to truncate, margin entire to repand-crenate toward apex, apex rounded to obtuse; lateral veins indistinct. Cymes 1-flowered; peduncle 3-7.5 cm, puberulent; bracts linear, 2.5-4 mm. Pedicel 1.5-3.3 cm. Calyx actinomorphic, 5-sect from base; segments equal, narrowly triangular, 3.5-6 X 1-1.5 mm, outside puberulent. Corolla purple to blue, outside puberulent to sparsely puberulent, inside glabrous; tube 3-3.5 mm; adaxial lip 6.5-8 mm, distinctly 2-lobed; abaxial lip ca. 6.5 mm. Filaments ca. 1.2 mm, glabrous; anthers oblong, ca. 3 mm, beakless; staminodes 3. Pistil 0.9-1.1 cm; ovary ca. 4 mm, appressed puberulent. Style appressed puberulent to puberulent near base. Capsule 4-6 mm. Fl. Aug-Nov, fr. Aug-Dec.

W Hubei, Sichuan, N Yunnan.

* Shaded rocks in hilly regions; 400-1700 m.