3. Isometrum fargesii (Franchet) B. L. Burtt, Notes Roy. Bot. Gard. Edinburgh. 23: 92. 1960.
城口金盏苣苔 cheng kou jin zhan ju tai
Didissandra fargesii Franchet, Bull. Mens. Soc. Linn. Paris, ser. 2, 15: 123. 1899.
Petiole to 1.5 cm, rust-brown villous; leaf blade obovate to narrowly oblong, sometimes oblique, 2-7.2 X 1.2-3 cm, adaxially puberulent-strigillose, abaxially puberulent, brown pubescent along veins, base cuneate, margin serrate near apex, apex rounded to obtuse; lateral veins 4 or 5 on each side of midrib, distinct to indistinct. Peduncle 3.5-10 cm, rust-brown villous, glabrescent; bracts 2-4 mm, rust-brown villous, margin entire. Pedicel 1-3 cm. Calyx segments lanceolate to triangular, 2.5-3 mm, margin entire. Corolla purple, 5-8 mm, outside glabrous; tube campanulate, 4-7 X 4-6.6 mm; lobes rounded, 1-2 X 3-4 mm. Stamens 3-5 mm; filaments glabrous; anthers coherent in pairs, thecae not confluent; staminode ca. 2 mm. Pistil 6-7 mm, glabrous; ovary 3.5-4 mm. Capsule 1.8-2.3 cm. Fl. Aug.
* Shady, damp rocks; 600-1000 m. Sichuan (Chengkou Xian).