Perennials 7-10 cm tall. Roots to 15 cm. Stems ascending, slender, simple, glabrous. Basal leaves petiole 0.5-2 cm, membranous; leaf blade linear-lanceolate to linear-elliptic, 4-10 cm × 5-8 mm, base narrowed, margin scabrous, apex acuminate, veins 1-3. Stem leaves 2 or 3 pairs; petiole 5-10 mm; leaf blade elliptic-lanceolate to elliptic, 1.5-3 cm × 4-6 mm, both ends obtuse, margin scabrous, midvein distinct. Flowers solitary, rarely in cymes. Pedicel purple, to 2.5 cm. Calyx tube narrowly obconic, 8-10 mm, membranous, margin entire; lobes 5, narrowly elliptic, subequal, 6-9 mm, herbaceous, base narrowed, margin scabrous, apex obtuse, midvein distinct. Corolla inside pale blue to blue, outside dark brown, tubular to funnelform, 2.4-2.8 cm; lobes ovate-orbicular, 4-5.5 mm, margin entire, apex rounded; plicae narrowly triangular, 2-2.5 mm, margin denticulate, apex acute. Stamens inserted just below middle of corolla tube; filaments 5-8 mm; anthers narrowly ellipsoid, 2-2.5 mm. Style 1-2 mm; stigma lobes oblong. Capsules sessile, ovoid-ellipsoid, 1.2-1.5 cm. Seeds brown, ellipsoid, 1.4-1.6 mm. Fl. and fr. Aug-Sep.
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