Perennials 25-80 cm tall. Taproot stout. Stems single, erect, robust, 6-13 mm in diam., angular. Leaves mostly basal, in a rosette; petiole flattened, 1-2 cm, base connate; leaf blade elliptic-spatulate to oblong, 6-20 × 2-5 cm, base narrowed, apex rounded; veins 3-5, arcuate. Stem leaves in whorls of 3-6; sessile or short petiolate, base free or slightly connate; leaf blade ovate-spatulate, ovate-oblong, or ovate, 7.5-12 × 2-3 cm, apex acuminate to obtuse; veins 5-7, arcuate. Inflorescences verticillasterlike, many flowered. Flowers 4merous, sometimes nodding. Pedicel erect, 3-5 cm, striate. Calyx lobes ovate-elliptic to ovate, 0.8-1.5 cm × 5-7 mm, base obtuse, apex acute, veins 1-3. Corolla pale blue-green to pale purple, with blue veins, campanulate, 2-2.5 cm in diam., tube 2-3 mm; lobes oblong to oblong-spatulate, 1.2-1.7 × 0.8-1.1 cm, apex rounded to truncate. Nectaries 1 per corolla lobe, orbicular, naked. Filaments 6-7 mm; anthers blue, ellipsoid, 2.5-3 mm. Style indistinct; stigma lobes suborbicular. Capsules ovoid, 1.2-1.8 cm. Seeds dark brown, compressed, ca. 3.2 mm in diam., discoid winged. Fl. and fr. Jul-Aug.
Home