Annuals 2-5 cm tall. Stems purple, ascending to erect, branched from base, densely, very minutely papillate. Basal leaves withered at anthesis; petiole 1-1.5 mm; leaf blade ovate-orbicular, 3-3.5 × 2.5-3 mm, margin cartilaginous and ciliate, apex rounded and mucronate, midvein prominent. Stem leaves 4-9 pairs; petiole tube 0.5-1 mm, margin ciliate; leaf blade 4-5 × 1.5-2 mm, shorter to as long as internodes. Lower stem leaves ovate or rarely spatulate, margin cartilaginous; middle to upper leaves elliptic, margin narrowly membranous and ciliate, apex obtuse and apiculate, midvein abaxially prominent. Flowers few. Pedicel 1-3 mm, surrounded by leaves, densely papillate. Calyx narrowly obconic, 5-6 mm; lobes ovate-lanceolate to triangular, 1.5-2 mm, margin narrowly membranous and ciliate, apex acuminate to acute and apiculate, midvein prominent. Corolla pale yellow-white, with blackish stripes, closed, tubular, 8-9 mm; lobes ovate, 1.5-2 mm, margin entire, apex obtuse; plicae oblong, 0.7-1 mm, margin erose, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 1.5-2 mm; anthers ellipsoid, 0.8-1 mm. Style 1.5-2 mm; stigma lobes linear. Capsules narrowly obovoid to obovoid, 4-5 mm; gynophore to 8 mm, stout. Seeds dark brown, ellipsoid, 1-1.2 mm. Fl. and fr. Jun-Sep.
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