Annuals 3-5 cm tall. Stems erect, fastigiate branched from base, densely papillate. Basal leaves withered at anthesis; petiole 1-2 mm; leaf blade ovate-lanceolate, 7-10 × 2-5 mm, abaxially glabrous, adaxially densely papillate, margin cartilaginous and densely ciliolate, apex obtuse, midvein distinct and papillate. Stem leaves petiole tube 1-1.5 mm, densely papillate; leaf blade spatulate to obovate, 7-10 × 1.5-4 mm, toward stem apex sometimes narrowly elliptic, 3-5 × 0.8-1.2 mm, abaxially glabrous, adaxially densely papillate, margin cartilaginous and densely ciliolate, apex obtuse to rounded and mucronate, midvein distinct and papillate. Flowers many. Pedicel 2-5 mm, densely papillate. Calyx narrowly obconic, 6-7 mm; lobes lanceolate, 3-4 mm, as long as to longer than tube, equal, margin cartilaginous and densely ciliolate, apex acuminate, midvein distinct and papillate. Corolla blue, tubular, 0.9-1.2 cm; lobes ovate, 1-1.5 mm, margin entire, apex obtuse; plicae ovate, 0.8-1.2 mm, margin erose, apex obtuse. Stamens inserted just below middle of corolla tube, equal; filaments 3-4 mm; anthers ellipsoid, 0.5-0.7 mm. Style 1.5-2 mm; stigma lobes oblong. Capsules narrowly obovoid to obovoid, 3-4 mm; gynophore to 8 mm, stout. Seeds light brown, ellipsoid, 0.8-1 mm. Fl. and fr. Apr-Sep.
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