宽脉唇柱苣苔 kuan mai chun zhu ju tai

Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 0.8-3.5 X 0.5-1.8 cm; leaf blade broadly ovate to orbicular-ovate, 6-12 X 5-12 cm, papery, sparsely appressed puberulent, eglandular, base nearly truncate to truncate on 1 side and broadly cuneate on other, margin undulate-dentate to repand, apex acute to rounded; lateral veins 3 or 4 on each side of midrib, inconspicuous. Cymes ca. 10-flowered; peduncle ca. 18 cm, spreading pubescent; bracts 2, free, lanceolate, ca. 2.2 cm X 5-7 mm, appressed puberulent, margin entire, apex obtuse. Pedicel to 1.6 cm, puberulent. Calyx 5-sect from base; segments equal, narrowly triangular to lanceolate-linear, ca. 6 X 1.1 mm, outside puberulent, inside apically puberulent with very short hairs, margin entire, apex acute. Corolla blue-purple, ca. 2.1 cm, sparsely puberulent; tube nearly tubular, ca. 1.3 cm X 7 mm; adaxial lip ca. 5 mm; abaxial lip ca. 8 mm. Filaments ca. 8 mm, sparsely glandular puberulent near apex; anthers fused by entire adaxial surfaces, ca. 4 mm, glabrous; staminodes 2, ca. 2.2 mm. Pistil ca. 1 cm, puberulent; ovary ca. 6 mm. Stigma obovoid, ca. 1.2 mm, 2-lobed. Fruit and seeds unknown. Fl. Aug.

* Damp rocks at cave entrances; ca. 300 m. S Hunan (Xinning Xian).

After publication of the family treatment for the Flora of China, this was treated as Primulina latinervis (W. T. Wang) Mich. Möller & A. Weber (Taxon 60: 783. 2011).