Annuals 10-20 cm tall. Stems ascending, much branched from base, glabrous. Basal leaves with petiole 1-2 mm; leaf blade spatulate to ovate-orbicular, 1-1.5 × 0.6-1.3 cm, margin almost smooth, apex obtuse to rounded, veins 1-3. Stem leaves widely spaced; petiole tube 0.5-1 mm; leaf blade ovate, 5-8 × 3-3.5 mm, shorter than internodes, margin almost smooth, apex obtuse, veins 1-3. Flowers many. Pedicel 1-1.5 cm, glabrous. Calyx with blackish short lines in tube, narrowly obconic, 7-9 mm; lobes filiform to filiform-subulate, 3.5-4.5 mm, margin smooth, apex acuminate, midvein distinct. Corolla purple, with numerous blackish short lines in throat, obconic, 1.7-2 cm; lobes ovate, 2.5-3 mm, margin entire, apex obtuse; plicae broadly oblong, 1.5-2 mm, margin erose, apex truncate. Stamens inserted at middle of corolla tube, equal; filaments 3.5-4 mm; anthers narrowly ellipsoid, 1.3-1.5 mm. Style 2.5-3 mm; stigma lobes linear. Capsules narrowly obovoid, 9-10 mm; gynophore to 1.5 cm. Seeds brown, ellipsoid, 1.1-1.3 mm. Fl. and fr. Jun-Aug.

* Roadsides, hillsides; 3000-3300 m. W Sichuan.