Description from Flora of China
Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 0.4-2.2 cm X ca. 3 mm; leaf blade narrowly to broadly elliptic or ovate, 1.5-3.6(-4.7) X 1-1.9(-2.4) cm, papery, adaxially densely villous (hairs to 8.2 mm) and puberulent, eglandular, abaxially densely pubescent, base cuneate to broadly cuneate, margin repand to entire, apex acute to rounded; lateral veins ca. 3 on each side of midrib, inconspicuous. Cymes 1- or 2-flowered; peduncle ca. 7 cm, spreading pubescent; bracts 2, free, triangular to narrowly triangular, 1.2-2.2 X 0.6-1.2 mm, pubescent, margin entire, apex acute. Pedicel 0.9-1.4 cm, spreading pubescent. Calyx 5-sect from base; segments equal, linear-triangular, ca. 4 X 1.5-1.8 mm, outside puberulent, inside glabrous, margin entire, apex attenuate. Corolla pale purple, ca. 3 cm, outside puberulent, inside puberulent basally; tube tubular-funnelform, ca. 2 X 1 cm; adaxial lip ca. 6 mm; abaxial lip ca. 1 cm. Filaments ca. 1 cm, glabrous; anthers fused by entire adaxial surfaces, ca. 3.5 mm, villous; staminodes 3, central ca. 2 mm, laterals ca. 5 mm. Pistil ca. 1.8 cm, puberulent; ovary ca. 1.1 cm. Stigma suboblong, ca. 2 mm, 2-lobed. Fruit and seeds unknown. Fl. May.
After publication of the family treatment for the Flora of China,
this was treated as Primulina villosissima (W. T. Wang) Mich. Möller & A. Weber (Taxon 60: 785. 2011).
* Forests on limestone hills; ca. 100 m. S Guangdong (Zhaoqing Xian).