Didymocarpus verecundus W. Y. Chun, Sunyatsenia 6: 297. 1946.

Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 1-10 cm X 4-10 mm; leaf blade oblique, rhombic-elliptic, 8-15 X 5-11 cm, papery, sparsely puberulent, eglandular, base oblique, cuneate to rounded on 1 side and rounded to cordate on other, margin irregularly dentate to denticulate, apex acute to rounded; lateral veins 4 or 5 on each side of midrib, inconspicuous. Cymes ca. 5-flowered; peduncle to 10 cm, villous; bracts 2, free, narrowly ovate to oblong, 1-1.2 cm X 3-6 mm, puberulent, margin crenulate, apex acute. Pedicel 1-5(-20) mm, puberulent. Calyx 5-sect from base; segments equal, linear-lanceolate, 1.2-1.7 cm X 2-4 mm, outside puberulent, inside appressed puberulent, margin denticulate, apex attenuate. Corolla blue, 4-4.5 cm, outside sparsely puberulent, inside puberulent on purple spots below adaxial lip; tube nearly tubular, ca. 3 X 0.9 cm; adaxial lip ca. 8 mm; abaxial lip ca. 1.8 cm. Filaments ca. 1.2 cm, apex puberulent; anthers fused by entire adaxial surfaces, ca. 6 mm, abaxially puberulent; staminodes 2, ca. 3 mm. Pistil ca. 3 cm, puberulent; ovary ca. 2 cm. Stigma cuneate, ca. 5 mm, 2-lobed. Capsule erect, 4-5 cm. Fl. Dec.

After publication of the family treatment for the Flora of China, this was treated as Primulina verecunda (Chun) Mich. Möller & A. Weber (Taxon 60: 785. 2011).

* Forests, rocky streamsides in valleys; 1000-1100 m. NE Guangxi (Mengshan Xian, Lipu Xian).