二色唇柱苣苔 er se chun zhu ju tai

Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 1.5-4 cm X 3-5 mm; leaf blade oblique, narrowly oblong to narrowly elliptic, often falcate, 4-13 X 1.3-3 cm, papery, adaxially densely appressed puberulent, eglandular, abaxially white velutinous, base attenuate, margin entire, apex acute to obtuse; lateral veins 5 or 6 on each side of midrib, inconspicuous. Cymes 2-flowered; peduncle 8-13 cm, puberulent to velutinous; bracts 2, free, linear to triangular or ovate, 5-12 X 1.5-2.5 mm, densely puberulent to velutinous, margin entire, apex acute. Pedicel 6-12(-18) mm, pilose and sparsely glandular puberulent. Calyx 5-sect from base; segments equal, lanceolate-linear to narrowly triangular, 4-7 X 1.2-2 mm, outside densely pubescent to pilose, inside puberulent near apex, margin entire, apex acute. Corolla purplish, ca. 3.6 cm, outside sparsely pilose, inside puberulent below stamens; tube narrowly funnelform, ca. 2.2 X 1 cm; adaxial lip ca. 6 mm; abaxial lip ca. 1.3 cm. Filaments ca. 1 cm, glabrous; anthers fused by entire adaxial surfaces, 3-5 mm, bearded; staminodes absent. Pistil ca. 2.5 cm, puberulent; ovary ca. 1.5 cm. Stigma cuneate, ca. 3 mm, 2-lobed. Capsule erect, 5-6 cm. Fl. Apr, fr. May.

* Rocks in hilly regions. Guangdong (Yunfu Xian).

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