四川唇柱苣苔 si chuan chun zhu ju tai

Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 0.5-5 cm X 2-4 mm; leaf blade ovate to elliptic, 2.9-11.5 X 1.5-6.5 cm, papery, puberulent, eglandular, base often oblique, cuneate on 1 side and broadly cuneate on other, margin repand-crenate to denticulate, apex acute to obtuse; lateral veins 3 or 4 on each side of midrib, inconspicuous. Cymes 1-4-flowered; peduncle 4-8 cm, spreading puberulent; bracts 2, free, ovate to nearly elliptic, 0.9-2.1 X 0.5-1.2 cm, puberulent, margin crenulate to entire, apex acute to obtuse. Pedicel 6-12 mm, puberulent. Calyx 5-sect from base; segments equal, lanceolate-linear, 7-10 X 1.5-2 mm, outside puberulent, inside glabrous, margin entire, apex acute. Corolla purple, ca. 4 cm, outside puberulent, inside puberulent below adaxial lip; tube funnelform-tubular, ca. 2.8 X 0.9 cm; adaxial lip ca. 6.5 mm; abaxial lip ca. 1.1 cm. Filaments ca. 9 mm, glandular puberulent above; anthers fused by entire adaxial surfaces, ca. 3 mm, apically with a few short hairs; staminodes 2, ca. 0.8 mm. Pistil ca. 2.6 cm, puberulent; ovary ca. 1.1 cm. Stigma cuneate, ca. 3 mm, 2-lobed. Capsule erect, ca. 4 cm. Fl. May-Jun.

* Shaded damp areas of montane forests; 700-1200 m. SE Sichuan (Pengshui Xian, Xiushan Xian).

After publication of the family treatment for the Flora of China, this was treated as Primulina sichuanensis (W. T. Wang) Mich. Möller & A. Weber (Taxon 60: 784. 2011).