石蝴蝶 shi hu die

Petiole 1-8 cm, puberulent; leaf blade ovate to nearly orbicular, 0.5-2.8 X 0.4-2.2 cm, adaxially densely appressed puberulent, abaxially densely pubescent, sometimes brownish pubescent along veins, base sometimes oblique, cordate to truncate, margin crenate to shallowly crenate, apex rounded to obtuse; lateral veins abaxially sometimes conspicuous. Cymes 1(or 2)-flowered; peduncle 4.5-10 cm, puberulent; bracts narrowly ovate, ca. 1 mm. Pedicel ca. 1 cm. Calyx actinomorphic, 5-sect from base; segments equal, narrowly lanceolate, 2-4 X 0.5-1 mm, outside sparsely puberulent. Corolla blue-purple, outside sparsely puberulent, inside glabrous; tube 3-5.2 mm; adaxial lip 2.2-3 mm, distinctly 2-lobed; abaxial lip ca. 8 mm. Filaments ca. 0.7 mm, rust-brown puberulent; anthers ovoid, ca. 2.5 mm, beakless; staminodes 3. Pistil 7-9 mm; ovary ca. 2 mm, puberulent. Style appressed puberulent near base. Capsule ca. 5 mm. Fl. May-Jun, fr. Jun.

* Shaded rocks in hilly regions; 2000-2600 m. C Yunnan.