Description from Flora of China
Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 0.6-8 cm X 1-5 mm; leaf blade elliptic to ovate, seldom broadly ovate, 2.6-10(-12) X 1.6-5.7 (-11.5) cm, papery, adaxially appressed pubescent and pilose, eglandular, abaxially appressed pilose, base oblique, broadly cuneate to cuneate on 1 side, cuneate to nearly cordate on other, margin crenate to denticulate, apex acute to obtuse; lateral veins 3 or 4 on each side of midrib, inconspicuous. Cymes 2-8-flowered; peduncle 5-20 cm, spreading pilose; bracts 2, free, elliptic to broadly ovate, 0.6-3.8 X 0.4-2.7 cm, puberulent, margin entire or denticulate, apex acute to obtuse. Pedicel 6-10 mm, glandular puberulent. Calyx 5-sect from base; segments equal, narrowly lanceolate to narrowly triangular, 3-9 X 1.1-1.9 mm, outside puberulent, inside glabrous, margin entire, apex attenuate to acute. Corolla white to purple-blue, 3-3.8 cm, outside puberulent, inside puberulent below abaxial lip and stamens; tube narrowly funnelform, ca. 2.8 X 1-1.2 cm; adaxial lip ca. 6 mm; abaxial lip ca. 1.1 cm. Filaments ca. 1.3 cm, sparsely glandular puberulent; anthers fused by entire adaxial surfaces, ca. 4.5 mm, bearded; staminodes 2, 6-7 mm. Pistil ca. 2.7 cm, puberulent; ovary ca. 1.7 cm. Stigma cuneate, ca. 3 mm, 2-lobed. Fruit and seeds unknown. Fl. Jun.
After publication of the family treatment for the Flora of China,
this was treated as Primulina lunglinensis (W. T. Wang) Mich. Möller & A. Weber (Taxon 60: 783. 2011).
* Streamside cliffs in valleys or on rocks on forest margin in limestone hills; 300-800 m. Guangxi, S Guizhou.