Herbs biennial, gray-white strigose. Stems numerous, cespitose, branched below, 15-35 cm tall. Basal leaves withered at anthesis; petiole of lower leaves 0.6-2 cm; stem leaves oblong to oblong-obovate, 0.6-2 cm × 6-10 mm, strigose, abaxially pallid, base decurrent to petiole, margin entire, apex rounded, mucronate; midvein prominent; upper leaves sessile. Inflorescences extra-axillary, bracteate. Pedicel thin, frequently twisted or recurved, 3-15 mm, strigose. Calyx lobes oblong, ca. 1.5 mm, gray strigose, apex obtuse. Corolla blue; tube ca. 1.5 mm; throat appendages fleshy, sparsely pubescent; limb ca. 5 mm wide; lobes 5, divaricate, orbicular, ca. 2.5 mm. Stamens inserted at middle of corolla tube; filaments ca. 0.8 mm; anthers oblong, ca. 0.5 mm. Nutlets pallid or brown, semiglobose-tetrahedral, appressed, 1.5-2 mm, smooth, glabrous, shiny, adaxial bottom surface protruding and prominent, 2 lateral surfaces slightly concave, with a longitudinal rib on border line, abaxial surfaces triangular, center line adaxially obscure, without stipe. Fl. Jul-Aug, fr. Aug-Sep.
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