Perennial herb 15-40 cm tall with a thick creeping rhizome, rose to the top. Leaves depart directly from the rhizome. They long petioles (up to 30 cm), extended at the base into a long membranous sheath and glubokotrehrazdelnoy plate with elliptical goal nokraynimi shares. From the axils of the leaves go leafless flowering arrows ending inflorescence — oblong brush with fruit stretched. Flowers pentamerous. Calyx deeply lobed, with ovate-lanceolate lobes. Corolla pale pink or white, bell-shaped, funnel-shaped, up to 1.5 cm blade fleshy, lanceolate, pointed, inside densely belobahromchatye. Fruits — unilocular ovoid capsule, with 6-8 seeds. Blooms in May and July, the fruits ripen in July and August. Common in cold and temperate zones of Eurasia and North America, including in almost all regions of Russia. In Central Russia is well known everywhere.
It grows in bogs, beaches and the shallow waters of lakes, ponds, oxbows, overgrown lakes and other water bodies. Often forms extensive thickets. Reproduces mainly vegetatively.
Nearly year-round good food for the reindeer, the leaves are eaten by them, since they appear to fall, and the rhizomes and winter as nival feed. Serves as food as elk, deer and other deer and beaver, water rats, muskrats. Ducks feed on seeds. Watch the leaves have a medical use. Infusion of them are used as bitter, stimulates appetite, amplifying gastric secretion and aids digestion. Decoction of leaves make therapeutic baths with scrofula in children. They washed poorly healing ulcers.