Annuals 2.5-6 cm tall. Stems ascending to erect, few branched from base, densely papillate. Basal leaves withered at anthesis; petiole 0.4-0.6 mm; leaf blade obovate to ovate-orbicular, 6-8 × 4-5 mm, densely papillate but glabrescent, margin cartilaginous, apex rounded and mucronate, midvein prominent. Stem leaves 3 or 4 pairs, folded; petiole tube 1-1.5 mm, densely papillate; leaf blade lanceolate, 5-7 × 2-4.5 mm, densely papillate but glabrescent, margin broadly membranous, apex acuminate and caudate, midvein abaxially prominent. Flowers few. Pedicel purple, 0.8-1.2 cm, surrounded by leaves, densely papillate. Calyx narrowly obconic, 1.3-1.5 cm, outside densely papillate but glabrescent; lobes subulate to narrowly triangular, 3.5-5.5 mm, margin broadly membranous, apex acuminate and caudate, midvein prominent. Corolla blue, with blackish stripes, narrowly obconic, 2-2.5 cm; lobes ovate, 3-4 mm, margin entire, apex acute; plicae ovate, 2-3 mm, margin entire or crenulate, apex obtuse. Stamens inserted at middle of corolla tube, unequal; filaments 3-4 mm; anthers ellipsoid, 1.2-1.5 mm. Ovary narrowly ellipsoid, 3-3.5 mm. Style 1.5-2 mm; stigma lobes oblong. Fl. Apr-Jun.
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