Annuals 2.5-4 cm tall. Stems few branched from base, basally glabrous, apically papillate. Basal leaves withered at anthesis; petiole 0.5-1.5 mm; leaf blade ovate to ovate-orbicular, 6.5-10 × 3.5-6 mm, margin cartilaginous, apex rounded and mucronate, veins 1-3. Stem leaves folded; petiole tube 1-1.5 mm; leaf blade linear-lanceolate to lanceolate, 5-6 × 1-2 mm, margin narrowly membranous, apex acuminate to obtuse and apiculate, midvein abaxially prominent. Flowers few. Pedicel 2-5 mm, surrounded by leaves, papillate. Calyx 5-6 mm, narrowly obconic; lobes triangular, 1.5-2 mm, margin narrowly membranous, apex acute and apiculate, midvein prominent. Corolla blue, with yellow-green base, outside with blue-gray stripes, inside with blackish spots in throat, obconic, 1-1.2(-1.4) cm; lobes ovate, 2-2.5 mm, margin entire, apex obtuse; plicae ovate, 1.5-2 mm, margin entire or denticulate, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 3-4 mm; anthers curved, ellipsoid, 1.3-1.5 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules narrowly obovoid to obovoid, 3-4 mm; gynophore to 1.2 cm, slender. Seeds dark brown, narrowly ellipsoid, 1-1.2 mm. Fl. and fr. Jun-Jul.
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