Annuals 5-10 cm tall. Stems ascending, branched from base, papillate. Basal leaves withered at anthesis; petiole 2-3 mm, membranous; leaf blade ovate-elliptic to ovate-orbicular, 0.7-1.3 cm × 4-7 mm, margin cartilaginous and ± ciliolate, apex acute and cuspidate, veins 1-3. Stem leaves widely spaced, folded; petiole tube 1-1.5 mm, membranous, adaxially papillate; leaf blade linear to linear-lanceolate, 3-11 × 1-1.5 mm, margin ± ciliolate with lower stem leaves cartilaginous and upper stem leaves membranous, apex acuminate and apiculate, midvein distinct. Flowers few to many. Pedicel 2-6 mm, surrounded by upper leaves, papillate. Calyx tubular to narrowly obconic, 7-9 mm; lobes linear-lanceolate, 3.5-5 mm, apex acuminate and apiculate, midvein prominent, margin ± ciliolate with basal half membranous and apical half cartilaginous. Corolla blue, with greenish yellow base, tubular, 1-2.1 cm, throat hairs scattered; lobes ovate-elliptic, 3-4.5 mm, margin entire to 3dentate, apex acuminate; plicae ovate, 2-3 mm, margin entire or denticulate, apex obtuse. Stamens inserted just below middle of corolla tube, equal; filaments 3-4 mm; anthers ellipsoid, 0.8-1 mm. Style 1-2 mm; stigma lobes oblong. Capsules narrowly obovoid to obovoid, 4-5 mm, conspicuously winged; gynophore to 1.5 cm. Seeds brown, ellipsoid, 0.8-1 mm. Fl. and fr. Jun-Oct.
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