Perennial herb 30-70 cm tall, with a creeping rhizome braid. Stems erect or ascending, rather thick. Leaves oblong-ovate, cordate, with short petioles or sessile, almost amplexicaul from toothed palmate to crenate-incised on the edge (very rarely leaves almost entire). Flowers in dense brush 6-15 cm long, extending from the axils of the upper two to four leaves. Bracts pubescent, linear-lanceolate, pedicels equal or longer. Calyx of 5 (rarely 4) unequal share-linear-lanceolate to subulate, a fifth share is much smaller than the others. Corolla bright blue, rarely pink or white, with dark veins, large, with a diameter of 1.5 cm, corolla lobes unequal: three round-ovate, fourth (lower) — ovate, shortly pointed. Stamens with filaments and blue anthers. Fruit — rounded boxes with shallow narrow groove, long curved style and flat seeds. It flowers from May to August, the fruits ripen in June and September.
European-West Asian look. In our country grows in the European part and the south of Western Siberia. In Central Russia is found in all areas, more to the south.
It grows in open forests, forest edges, meadows, thickets, meadows. Ornamental plant.