Annuals 3-6 cm tall. Stems purple, erect, branched from base or rarely simple, glabrous. Leaves usually widely spaced; petiole tube 1-2 mm; leaf blade broadly ovate to suborbicular, 1-1.3 cm × 3-8 mm, margin cartilaginous, smooth or ciliolate, apex rounded and mucronate, veins 1-3. Leaves sometimes narrowed toward stem apex; leaf blade lanceolate to narrowly elliptic, 7-9 × 1.5-2 mm, margin narrowly membranous and ciliolate, apex acuminate and apiculate, midvein distinct. Flowers (1 or) few to many. Pedicel purple, 1-1.5 mm, glabrous. Calyx narrowly obconic, 7-9 mm; lobes narrowly triangular to ovate-elliptic, 3.5-4.5 mm, equal, as long as tube, margin narrowly membranous and smooth, apex acute, midvein prominent. Corolla pale blue, with pale yellow base, funnelform, 1.4-1.7 cm; lobes ovate, 2.5-3 mm, margin entire, apex obtuse; plicae broadly oblong to ovate, 1-1.5 mm, margin slightly 2cleft to denticulate, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 4-5 mm; anthers ellipsoid, 1.5-2 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules narrowly obovoid, 6-7 mm; gynophore to 1 cm, stout. Seeds brown, ellipsoid, 0.3-0.5 mm. Fl. and fr. Apr-Jun.
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