Annuals 2-3.5 cm tall; leaves and calyces densely puberulent or glabrescent. Stems erect, branched from base, with short branches, glabrous. Basal and lower stem leaves with petiole 0.5-1 mm; leaf blade spatulate to obovate, 0.5-2 cm × 3.5-5.5 mm, abaxially hirsute and glabrescent, adaxially glabrous, margin strongly ciliate, apex acute to rounded, veins 1-3. Middle to upper stem leaves with petiole 1-1.5 mm, entirely connate, hirsute and glabrescent; leaf blade linear-lanceolate to elliptic, 6-10 × 1.5-2.5 mm, abaxially hirsute and glabrescent, adaxially glabrous, apex acuminate. Flowers few to many. Pedicel 3-5 mm, surrounded by upper leaves, glabrous. Calyx tubular, 6.5-9 mm, outside hirsute and glabrescent; lobes ovate-lanceolate, 3-4 mm, margin long ciliate, apex acuminate and caudate, midvein distinct. Corolla greenish yellow or inside sometimes pale blue, tubular, 1.4-1.6 cm, glabrous; lobes ovate-lanceolate, 2-3 mm, margin entire, apex acute and caudate; plicae ovate-orbicular, 1.2-1.5 mm, margin entire or indistinctly denticulate, apex rounded. Stamens inserted at middle of corolla tube, unequal; filaments 3.5-6.5 mm; anthers narrowly ellipsoid, 1.2-1.5 mm. Style 1.2-1.5 mm; stigma lobes narrowly oblong. Capsules narrowly obovoid, 5-6.5 mm; gynophore to 1 cm. Seeds brown, ellipsoid, 1.2-1.5 mm. Fl. and fr. May.

* 2400-3300 m. S Sichuan, NW Yunnan