Description from Flora of China
Perennials 35-80 cm tall. Stems glabrous. Stem leaf blades linear to linear-lanceolate, base obtuse to rounded, margin slightly revolute and smooth, apex acuminate to acute, veins 1-3 and prominent. Lowermost leaves pale purple, 1-1.2 cm; middle leaves 5-10 cm × 3-9(-20) mm; upper leaves slightly smaller, surrounding flowers. Inflorescences formed by crowded axillary or terminal clusters, few to many flowered; bracts 0.8-1.2 cm. Flowers sessile. Calyx tube 0.8-1.2 cm, usually split on 1 side; lobes irregular, linear to narrowly triangular, 4-8(-16) mm, margin slightly revolute, apex acute, vein 1. Corolla blue-purple, tubular-campanulate, 3.5-4.5 cm; lobes ovate-orbicular, 5-8 mm, margin entire or erose, apex obtuse to rounded; plicae triangular to truncate, 1-1.5 mm, oblique, margin entire. Stamens inserted at middle of corolla tube; filaments subulate, 7-10 mm; anthers narrowly ellipsoid, 4-4.5 mm. Style 2-3 mm. Capsules 1.5-1.8 cm; gynophore to 1 cm. Seeds 2-2.5 mm. Fl. and fr. Aug-Sep.
Meadows, forests; 600-1000 m. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol [Japan, Korea, Mongolia, E Russia]