Petrocosmea cavaleriei H. Lév.

Petiole 1-3.7 cm, puberulent; leaf blade orbicular-ovate to broadly ovate, 0.6-2.4 X 0.6-2.2 cm, adaxially pubescent, abaxially sparsely puberulent, base nearly cordate to cordate-truncate, margin crenate to shallowly crenate, apex obtuse to rounded; lateral veins inconspicuous. Cymes 1-flowered; peduncle 3.5-7 cm, sparsely pilose; bracts linear, ca. 2 mm. Pedicel 1.2-1.5 cm. Calyx actinomorphic, 5-sect from base; segments equal, narrowly lanceolate, 1.8-3 X 0.3-0.6 mm, outside pilose. Corolla purplish, outside puberulent near base, inside sparsely pilose on adaxial lip; tube 2-3 mm; adaxial lip 2-4 mm, distinctly 2-lobed; abaxial lip 5-8 mm. Filaments ca. 1 mm, pilose; anthers broadly oblate, 0.5-0.6 mm, beakless; staminode 1. Pistil ca. 4 mm; ovary ca. 1.5 mm, pilose. Style pilose near base. Capsule ca. 5 mm. Fl. and fr. Oct.

* Guizhou (Pingba Xian, Huishui Xian).