Petrocosmea sichuanensis Chun ex W. T. Wang

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.

Sichuan (Yuexi Xian).

* Rocks in valleys; 500-2200 m.

Petrocosmea sichuanensis là một loài thực vật có hoa trong họ Tai voi. Loài này được Chun ex W.T. Wang miêu tả khoa học đầu tiên năm 1984.

四川石蝴蝶（学名：Petrocosmea sichuanensis）为苦苣苔科石蝴蝶属下的一个种。