Annuals 3-6 cm tall. Stems purple, erect, fastigiate branched from base, densely papillate. Petiole 1-2 mm, papillate; leaf blade subleathery, rigid, margin cartilaginous and ciliolate, apex acuminate and apiculate, midvein prominent. Basal leaf blades ovate-lanceolate to ovate, 0.7-1.5 cm × 3-9 mm. Stem leaves overlapping, crowded; leaf blade lanceolate, 4-9 × 1-3 mm, smaller toward apex. Flowers few to many, subsessile. Calyx narrowly obconic, 5.5-6.5 mm, tube membranous; lobes linear-lanceolate, 2.5-3 mm, as long as tube, subleathery, rigid, margin cartilaginous and ciliolate, apex acuminate and apiculate, midvein prominent. Corolla blue, tubular, 6-10 mm; lobes ovate, 1.5-2 mm, margin entire, apex obtuse; plicae ovate-orbicular, 0.8-1.5 mm, margin entire or denticulate, apex obtuse. Stamens inserted at basal part of corolla tube, unequal; filaments 2.5-4 mm; anthers narrowly ellipsoid, 0.5-1 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules obovoid, 3-3.5 mm; gynophore to 5 mm, slender. Seeds light brown, ellipsoid, 0.6-0.8 mm. Fl. and fr. May-Sep.
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