Stems single or sometimes 2 from one root, 70-100 cm tall, simple, glabrous. Cauline leaves sessile, glabrous; blade narrowly elliptic or ovate-elliptic, 2.5-8 × 0.6-2 cm, base obtuse or cuneate, margin serrate, apex acute. Inflorescence branches (cymes) extremely short, only 2-3 cm, with 2 to several flowers, several forming a narrow panicle; pedicels very short. Hypanthium globose-ovoid or globose-obconic, glabrous; calyx lobes often reflexed, ovate-deltoid, 3-6 × 1-2 mm, overlapping at base, margin with 2 or rarely 3 or 4 pairs of long denticles, apex acuminate. Corolla blue or purple-blue, broadly campanulate, 1-2 cm; lobes broadly ovate-deltoid, ca. 1/2 as long as tube, apex obtuse. Disk shortly tubular, 1-2 mm, glabrous. Style shorter than corolla. Capsule subglobose. Fl. Jul-Sep. 2n = 34.
Found in broad-leaved forests, especially oak, and in thickets and meadows. Wet meadows, forests of Betula, sunny grassy slopes.
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