Annuals 4-10 cm tall. Stems ascending to erect, weak, 2 or 3 × dichotomously branched from base and with few branches, glabrous. Basal leaves withered at anthesis; petiole 1-2 mm; leaf blade ovate-elliptic, ovate, or ovate-orbicular, 0.8-1.3 cm × 4-7 mm, abaxially glabrous, adaxially densely and minutely papillate, margin ciliolate, apex obtuse, veins 3-5. Stem leaves spreading; petiole tube 0.5-0.7 mm, abaxially papillate; leaf blade elliptic-lanceolate to sometimes ovate-lanceolate, 3.5-5 × 2-3 mm, much shorter than internodes, abaxially glabrous, adaxially densely and minutely papillate, base rounded to cordate, margin ciliolate, apex acute, midvein distinct. Flowers few to many. Pedicel 5-10 mm, glabrous. Calyx tubular to narrowly obconic, 3-3.5 mm; lobes filiform to filiform-subulate, 1.5-2.2 mm, base 0.5-1 mm wide, apex acuminate. Corolla blue-gray or outside with blue-gray broad stripes and inside white, narrowly obconic, 6-7 mm; lobes ovate, 3-4 mm, margin entire, apex obtuse; plicae deeply 2cleft, segment margins entire, serrulate, or sometimes few laciniate. Stamens inserted just below middle of corolla tube, equal; filaments 1-1.5 mm; anthers ovoid, 0.5-0.8 mm. Style 0.6-0.8 mm; stigma lobes linear. Capsules obovoid, 2-3 mm; gynophore 2-5 mm. Fl. and fr. Jun-Sep.
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