Annuals 5-15 cm tall. Stems erect; branches few, from middle or apically, short, erect; flowering branches crowded together, or rarely simple, densely papillate. Petiole tube 1-2 mm; leaf blade linear-lanceolate, 0.8-1.2 cm × 1-3 mm, apex acute and apiculate; veins 1-3, prominent. Basal leaves withered at anthesis, margin cartilaginous. Stem leaves incurved, folded, margin broadly membranous. Flowers few. Pedicel 2-4 mm, densely papillate. Calyx narrowly obconic, 1-1.2 cm, tube membranous; lobes incurved, ovate-lanceolate, 5-6 mm, margin broad, apex acuminate and caudate, midvein prominent. Corolla blue-purple, with yellow-green base, tubular, 1.5-1.8 cm; lobes ovate, 3-5 mm, margin entire, apex obtuse; plicae ovate, 2-4 mm, margin entire or denticulate, apex obtuse. Stamens inserted just below middle of corolla tube, unequal; filaments 3.5-5.5 mm; anthers narrowly ellipsoid, 1.2-1.5 mm. Style 2-3 mm; stigma lobes oblong. Capsules narrowly obovoid, 8-9 mm; gynophore to 2 cm, slender. Seeds dark brown, ellipsoid, 1-1.2 mm. Fl. and fr. Jul-Aug.
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