心叶唇柱苣苔 xin ye chun zhu ju tai

Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 3-17.5 cm X ca. 2 mm; leaf blade ovate to oblate or reniform, 2-6.8 X 2-6.8 cm, herbaceous, puberulent, eglandular, base cordate, margin irregularly repand-crenate to dentate to serrate, apex acute to rounded; lateral veins 3-5 on each side of midrib, slightly conspicuous. Cymes 1-flowered; peduncle ca. 3.5 cm, white villous; bracts 2, free, linear-lanceolate, 6-9 X 1-1.2 mm, puberulent and glandular puberulent, margin entire, apex acute. Pedicel ca. 1 cm, densely puberulent. Calyx 5-sect from base; segments equal, linear-lanceolate, ca. 1.3 cm X 1.2-1.5 mm, outside puberulent and glandular, inside strigose, margin entire, apex attenuate. Corolla pink, 4-4.5 cm, outside puberulent, inside puberulent basally and on limb; tube narrowly funnelform, ca. 2.8 X 1.1 cm; adaxial lip ca. 7 mm; abaxial lip ca. 1.4 cm. Filaments ca. 1.4 cm, glabrous; anthers fused by entire adaxial surfaces, ca. 5 mm, villous; staminodes 2, ca. 8.5 mm. Pistil ca. 2.7 cm, puberulent; ovary ca. 2 cm. Stigma cuneate, ca. 2 mm, 2-lobed. Fruit and seeds unknown. Fl. Jul.

* Among shaded rocks on limestone hills; ca. 200 m. Guangxi (Yangshuo Xian).

After publication of the family treatment for the Flora of China, this was treated as Primulina cordata Mich. Möller & A. Weber (Taxon 60: 781. 2011).