四川石蝴蝶 si chuan shi hu die

Petiole 0.3-2.5 cm, puberulent; leaf blade ovate to broadly ovate, seldom elliptic, 4-17 X 4-12 mm, puberulent to densely puberulent, base cordate to broadly cuneate, sometimes peltate, margin crenulate to subentire, apex broadly acute to obtuse; lateral veins inconspicuous. Cymes 1-flowered; peduncle 2.2-5 cm, puberulent; bracts unknown. Calyx actinomorphic, 5-sect from base; segments equal, lanceolate, 2-2.5 X 0.8-1 mm, outside puberulent. Corolla purple-blue, outside sparsely puberulent, inside glabrous; tube ca. 4 mm; adaxial lip 2-3 mm, distinctly 2-lobed; abaxial lip 5-6 mm. Filaments ca. 1.2 mm, densely brownish puberulent toward apex; anthers nearly oblong, ca. 1.8 mm, beakless; staminodes apparently absent. Pistil ca. 5 mm; ovary ca. 1 mm, puberulent toward style. Style glabrous. Capsule ca. 5 mm. Fl. and fr. Jun.

* Rocks in valleys; 500-2200 m. Sichuan (Yuexi Xian).