Description from Flora of China
Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite or ternate; petiole 1-9 cm X 1.5-3.5 mm; leaf blade slightly oblique, elliptic, 1.5-8.2 X 1-4.4 cm, papery, densely puberulent, eglandular, base oblique, cuneate to cuneate on 1 side and rounded on other, margin repand-crenate, apex obtuse; lateral veins ca. 4 on each side of midrib, inconspicuous. Cymes ca. 2-flowered; peduncle 6-7 cm, densely spreading puberulent; bract 1, spathelike, navicular-ovate, 1.5-2 cm X 4-6 mm, densely puberulent, margin entire, apex long acuminate. Pedicel 1-16 mm, puberulent. Calyx 5-sect from base; segments equal, linear-lanceolate, ca. 5 X 1-1.2 mm, outside puberulent, inside glabrous, margin entire, apex attenuate. Corolla bluish to pale purple with 1 yellow spot below adaxial lip, ca. 3 cm, outside puberulent, inside glandular puberulent only on yellow spot; tube nearly campanulate, ca. 2.1 X 1.5 cm; adaxial lip ca. 6 mm; abaxial lip ca. 9 mm. Filaments ca. 1 cm, sparsely puberulent near apex; anthers fused by entire adaxial surfaces, ca. 2.5 mm, glabrous; staminodes 2, ca. 4 mm. Pistil ca. 2.2 cm, puberulent; ovary ca. 1.1 cm. Stigma obtrapezoid, ca. 1.5 mm, 2-lobed. Capsule erect, ca. 3 cm. Fl. and fr. Aug.
After publication of the family treatment for the Flora of China,
this was treated as Primulina spadiciformis (W. T. Wang) Mich. Möller & A. Weber (Taxon 60: 784. 2011).
* Known only from cultivation. Cultivated in the Medicinal Botanic Garden in Nanning, Guangxi; possibly introduced from Mt. Damingshan, Wuming Xian, Guangxi.