Annuals 3-5 cm tall. Stems purple, erect, branched, glabrous or papillate. Petiole 2-4 mm; leaf blade suborbicular, 1.5-3 mm in diam., base abruptly contracted, margin cartilaginous and smooth, apex rounded, midvein distinct. Flowers terminal, solitary, sessile or subsessile, 5merous. Calyx tube with distinct purple veins, tubular, 5-10 mm, membranous; lobes spreading to recurved, similar to leaves, 1.5-2.5 mm. Corolla clear pale blue, with pale yellow-white base, unspotted, salverform, rarely tubular, 1-2 cm; lobes ovate-elliptic, 2-5 mm, margin entire, apex obtuse; plicae extremely oblique, triangular to auricular, 1-1.5 mm, margin entire. Stamens inserted at apical part of corolla tube, usually exserted, equal; filaments 1.5-3.5 mm; anthers narrowly ellipsoid, 0.5-3 mm. Style usually exserted, linear, 4-7 mm, ± equaling ovary; stigma lobes narrowly oblong. Capsules narrowly ellipsoid, 7-10 mm; gynophore to 2.5 cm. Seeds black, subglobose, 0.8-1 mm. Fl. and fr. Jul-Sep.
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