Perennial herb 60-120 cm tall with long roots, which are expressed tuberous thickening, which is popularly called "peanuts." Stems are erect, usually painted in purple. The leaves are dark green, glabrous or with scattered hairs, beneath lighter from bare to abundantly pubescent (sometimes only the veins). Lower leaves triangular-cordate, krupnogorodchatye at the edges, with long petioles, medium –ovate cordate, with the city-Chato-serrate edges, the upper – lanceolate, sharply serrated on the edges, sessile. The flowers are large, clustered at the tips of stems in dense whorls, separated from each other. Calyx tubular-bell-shaped, up to 10 mm, with five semi-circular prongs ending subulate rejected edge. Corolla 1.5-2 cm long, pink or purple on the outside to the tube pubescent with stellate hairs with long beam (bare tube), two-lipped, upper lip svodovidnaya upstairs unequally, from the inside to the edge of a thick beard hairs, lower lip three-lobed, with a wide slightly emarginate middle lobe and small ovate side. Blooms in June and July, the fruits ripen in July and August.
The plant is common in Central and Eastern Europe, the Caucasus, and Central Asia Minor. In Russia grows in the southern half of the European part, in Caucasia and Dagestan, Siberia and the Far East. In Central Russia is found in all regions of the chernozem zone and in the border areas Nechernozemie.
It grows in the steppes, dry slopes, thickets, meadows, vacant lots, on limestone outcrops.