Annuals 3-10 cm tall. Stems ascending to erect, branched from base, glabrous. Basal leaves, withered at anthesis; petiole 0.5-1.5 mm; leaf blade lanceolate to ovate, 2.5-7 × 1.5-2.5 mm, margin cartilaginous, apex acute, midvein prominent. Stem leaves with petiole tube 1-2 mm; leaf blade subulate, 0.7-1.5(-5) cm × 1.5-2 mm, longer toward apex, subleathery, rigid, glossy, margin basal half broadly membranous and ciliolate, apical half cartilaginous and smooth, apex acuminate, midvein abaxially prominent. Flowers few, subsessile. Calyx narrowly obconic, 1.3-1.7 cm, tube membranous; lobes subulate, 7-9 mm, subleathery, rigid, glossy, margin basal half broadly membranous and ciliolate, apical half cartilaginous and smooth, apex acuminate and apiculate, midvein prominent. Corolla pale blue, with blue-gray short streaks in throat, tubular, (2-)2.5-3 cm; lobes ovate, 3-5 mm, margin entire or indistinctly crenulate, apex acuminate to obtuse; plicae ovate, 2.5-4 mm, margin entire or erose, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 2.5-4 mm; anthers narrowly ellipsoid, 1.2-2 mm. Style 1.5-2 mm; stigma lobes ovate-orbicular. Capsules ellipsoid, 1.1-1.3 cm; gynophore to 4 cm, slender. Seeds light brown, ellipsoid to ovoid-ellipsoid, 0.5-0.7 mm. Fl. and fr. Jul-Nov.
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