Annuals 6-15 cm tall. Stems purple, ascending, branches spreading to prostrate, densely papillate. Petiole equal or slightly longer than leaf blade, slender; leaf blade spatulate to obovate, 5-10(-15) × 3.5-7 mm, base narrowed, margin scabrous, apex rounded, veins 1-3. Inflorescences axillary or terminal clusters, 1-3-flowered. Flowers sessile or subsessile, 5merous. Calyx tube narrowly obconic, 7-10 mm; lobes suborbicular, 6-8 mm, equal, base contracted into a tongue, margin scabrous, apex rounded, midvein prominent. Corolla pale yellow-white to pale blue, usually with blackish streaks and spots, tubular, less than 1.5(-2) cm or 2.5-3 cm; lobes ovate, 2.5-4 mm, symmetric, margin entire, apex obtuse; plicae broadly ovate, 1.5-2 mm, margin slightly 2cleft or denticulate. Stamens inserted at middle of corolla tube, usually exserted, unequal; filaments 5-8 mm; anthers narrowly ellipsoid, 1-1.5 mm. Style linear, 3.5-5.5 mm, much shorter than ovary; stigma lobes narrowly oblong. Capsules narrowly ellipsoid, 1.3-1.5 cm; gynophore to 3 cm, slender. Seeds brown, subglobose, 0.5-0.7 mm. Fl. and fr. Aug-Nov.
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