秦岭石蝴蝶 qin ling shi hu die

Petiole 0.5-2.5 cm, sparsely puberulent; leaf blade broadly ovate to rhombic-ovate or nearly orbicular, 0.7-3 X 0.7-2.8 cm, sparsely appressed puberulent, base broadly cuneate, margin repand to indistinctly crenate, apex rounded to obtuse; lateral veins indistinct. Cymes 1-flowered; peduncle 3-5 cm, sparsely puberulent; bracts linear-lanceolate, 1.6-2 mm. Pedicel 1.5-2 cm. Calyx actinomorphic, 5-sect from base; segments equal, narrowly triangular, ca. 3.8 X ca. 1 mm, outside puberulent. Corolla purplish, outside sparsely appressed puberulent, inside densely white puberulent on adaxial lip; tube ca. 2.8 mm; adaxial lip ca. 4.8 mm, distinctly 2-lobed; abaxial lip ca. 4.8 mm. Filaments ca. 1.2 mm, glabrous; anthers oblong ovoid, ca. 1.2 mm, beakless; staminodes 2. Pistil ca. 5.2 mm; ovary ca. 1 mm, spreading pubescent. Style spreading pubescent. Fruit unknown. Fl. Aug-Sep.

* Rocks in hilly regions; 700-1100 m. S Shaanxi (Mian Xian).