Annuals 35-40 cm tall. Stems erect, angular, branched from middle, densely papillate. Leaves sessile, linear, 1-3.5 cm × 3-5 mm, base obtuse, margin ciliolate and revolute when dry, apex acuminate, midvein abaxially distinct. Inflorescences racemelike, usually in many-flowered panicles. Flowers 5merous. Pedicel spreading to erect, 0.8-2 cm, angular, papillate. Calyx tube 1-1.5 mm; lobes linear to linear-lanceolate, 7-10 mm, base obtuse, apex acuminate, midvein distinct. Corolla blue, tube 1-1.5 mm; lobes elliptic to ovate-elliptic, 1.2-1.6(-1.8) cm, apex acuminate. Nectary connate at base into a tube pointed outward, apex lamellate, margin lobed. Filaments 6-8 mm; anthers blue, linear, 3-5 mm. Ovary ensiform to obovoid-ellipsoid, 1-1.5 cm, apex triangular acute. Stigma lobes triangular, decurrent to middle of ovary. Capsules ovoid-ellipsoid, as long as persistent corolla. Seeds brown, globose, ca. 0.5 mm in diam. Fl. and fr. Nov.
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