A perennial herbaceous plant from 30 to 120 cm, with a creeping rhizome. Stems are erect, branching at the top, rounded or slightly quadrangular, pubescent with short curved hairs or glabrous. The leaves are opposite or whorled, oblong or lanceolate, slightly grayish (especially the bottom) due to the short hairs at the edges jagged, sharp-biserrate or on top of the entire, at the base of the wedge to slightly heart-shaped, with short petioles. Flowers in apical and lateral brushes, which combine to form the total paniculate-racemose inflorescence. Bracts linear-lanceolate, usually shorter peduncles pubescent. Cup to 2/3 split into four uzkoovalnye blunt share, with simple hairs mixed with iron. Corolla blue or light blue, rarely pinkish, 5-6 mm long, with chetyrehrazdelnym limb, cut into unequal shares: two egg-shaped (top and bottom) and two almost lanceolate, acute (side). The fruits are elliptic swollen boxes with flat seeds. Blooms from June to August, the fruits ripen in July-September.
European-West Asian look. In our country grows in the European part, the Caucasus, Dagestan, in the south of Western Siberia, including the Altai. In Central Russia is known in all areas of the chernozem zone, as well as in the valleys of the major rivers in many regions Nechernozemie.
Grows in meadows, steppes, forests, forest edges.