Annuals 5-8 cm tall. Stems purple, prostrate to ascending, angular, much branched from base, papillate. Leaves sessile, slightly narrowed at base, margin ciliate, apex obtuse. Basal leaves narrowly elliptic to ovate-elliptic, 1.2-1.4 cm × 2-4 mm. Stem leaves narrowly lanceolate to ovate-elliptic, 4-6 × 1.5-2.5 mm. Flowers terminal, solitary. Pedicel purple, 3-4.5 mm, glabrous. Calyx tube 1-1.2 mm; lobes lanceolate, 4-6.5 × 1.5-2 mm, apex acute. Corolla blue, basally yellow, with 3-5 blue veins on each lobe, tube 1.5-2 mm; lobes elliptic to ovate-elliptic, 1.3-1.6 cm, glabrous, apex rounded. Nectaries yellow, galeate, 1.5-2 mm, margin erose. Filaments 5-6 mm; anthers blue, ellipsoid, 2-2.2 mm. Capsules sessile, narrowly cylindric, to 1.3 cm. Seeds brown, globose, 0.8-1 mm in diam.; seed coat smooth. Fl. and fr. Aug-Sep.
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